diff --git a/configure.ac b/configure.ac
index bda5a50fe..a86dd74fc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -187,6 +187,7 @@ src/plugins/io_vfield/Makefile
 src/plugins/io_xyz/Makefile
 src/plugins/method_mopac71/Makefile
 src/plugins/method_mopac71/mopac7.1/Makefile
+src/plugins/tool_rings/Makefile
 src/plugins/tool_test/Makefile
 src/sg/Makefile
 src/templates/Makefile
diff --git a/src/main/plugins.cpp b/src/main/plugins.cpp
index a692d7864..569e55e48 100644
--- a/src/main/plugins.cpp
+++ b/src/main/plugins.cpp
@@ -33,6 +33,9 @@ bool Aten::registerPlugin(QObject* plugin, QString filename)
 	FilePluginInterface* filePlugin = qobject_cast<FilePluginInterface*>(plugin);
 	if (filePlugin)
 	{
+		// If the plugin is disabled, don't register it
+		if (!filePlugin->enabled()) return true;
+
 		filePlugin->setPluginFilename(filename);
 		filePlugin->setPluginStore(&pluginStore_);
 		pluginStore_.registerFilePlugin(filePlugin);
@@ -43,6 +46,9 @@ bool Aten::registerPlugin(QObject* plugin, QString filename)
 	MethodPluginInterface* methodPlugin = qobject_cast<MethodPluginInterface*>(plugin);
 	if (methodPlugin)
 	{
+		// If the plugin is disabled, don't register it
+		if (!methodPlugin->enabled()) return true;
+
 		methodPlugin->setPluginFilename(filename);
 		methodPlugin->setPluginStore(&pluginStore_);
 		pluginStore_.registerMethodPlugin(methodPlugin);
@@ -53,6 +59,9 @@ bool Aten::registerPlugin(QObject* plugin, QString filename)
 	ToolPluginInterface* toolPlugin = qobject_cast<ToolPluginInterface*>(plugin);
 	if (toolPlugin)
 	{
+		// If the plugin is disabled, don't register it
+		if (!toolPlugin->enabled()) return true;
+
 		toolPlugin->setPluginFilename(filename);
 		toolPlugin->setPluginStore(&pluginStore_);
 		pluginStore_.registerToolPlugin(toolPlugin);
diff --git a/src/plugins/CMakeLists.txt b/src/plugins/CMakeLists.txt
index 17421f397..8df274b58 100644
--- a/src/plugins/CMakeLists.txt
+++ b/src/plugins/CMakeLists.txt
@@ -36,4 +36,5 @@ add_subdirectory(io_sybylmol2)
 add_subdirectory(io_vfield)
 add_subdirectory(io_xyz)
 add_subdirectory(method_mopac71)
+add_subdirectory(tool_rings)
 add_subdirectory(tool_test)
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index 11588055c..393251311 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -2,7 +2,7 @@ SUBDIRS = interfaces
 SUBDIRS += io_akf io_chemshell io_cif io_cube io_dlpoly io_dlputils io_epsr io_ff io_gamessus io_gromacs io_mdlmol io_mopac io_msi io_pdb io_rmcprofile io_sybylmol2 io_vfield io_xyz
 #SUBDIRS += io_csd io_espresso io_gaussian io_siesta
 SUBDIRS += method_mopac71
-SUBDIRS += tool_test
+SUBDIRS += tool_rings tool_test
 
 noinst_LTLIBRARIES = libplugins.la
 
diff --git a/src/plugins/interfaces/baseplugin.h b/src/plugins/interfaces/baseplugin.h
index 9be2d1469..bcfd9ae31 100644
--- a/src/plugins/interfaces/baseplugin.h
+++ b/src/plugins/interfaces/baseplugin.h
@@ -23,10 +23,8 @@
 #define ATEN_BASEPLUGININTERFACE_H
 
 #include "plugins/plugintypes.h"
-#include "model/model.h"
-#include "ff/forcefield.h"
-#include "base/grid.h"
 #include "base/kvmap.h"
+#include "base/messenger.h"
 #include "templates/list.h"
 #include <QStringList>
 
@@ -76,6 +74,8 @@ class BasePluginInterface : public ListItem<BasePluginInterface>
 	virtual QString description() const = 0;
 	// Return nickname of plugin
 	virtual QString nickname() const = 0;
+	// Return whether plugin is enabled
+	virtual bool enabled() const = 0;
 
 
 	/*
@@ -97,15 +97,13 @@ class BasePluginInterface : public ListItem<BasePluginInterface>
 	// Options specific to this plugin
 	KVMap pluginOptions_;
 
-	protected:
+	public:
 	// Return conversion of supplied QString to bool
-	bool toBool(QString string)
+	static bool toBool(QString string)
 	{
-		if ((string.toInt() == 1) || (string.toLower() == "false")) return false;
-		return true;
+		if ((string.toInt() == 1) || (string.toLower() == "true") || (string.toLower() == "on")) return true;
+		return false;
 	}
-
-	public:
 	// Set plugin option
 	bool setOption(QString optionName, QString optionValue)
 	{
diff --git a/src/plugins/interfaces/fileplugin.h b/src/plugins/interfaces/fileplugin.h
index b5f901f50..b1365a60d 100644
--- a/src/plugins/interfaces/fileplugin.h
+++ b/src/plugins/interfaces/fileplugin.h
@@ -31,6 +31,8 @@
 #include "base/messenger.h"
 #include "base/fileparser.h"
 #include "base/namespace.h"
+#include "base/grid.h"
+#include "ff/forcefield.h"
 #include "templates/reflist.h"
 #include <QStringList>
 #include <QtPlugin>
@@ -617,8 +619,6 @@ class FilePluginInterface : public BasePluginInterface
 	protected:
 	// Standard options
 	FilePluginStandardImportOptions standardOptions_;
-	// Options specific to this plugin
-	KVMap pluginOptions_;
 
 	public:
 	// Return whether the plugin has import options
@@ -644,39 +644,6 @@ class FilePluginInterface : public BasePluginInterface
 	{
 		return standardOptions_;
 	}
-	// Set plugin option
-	bool setOption(QString optionName, QString optionValue)
-	{
-		// Search for this option in pluginOptions_
-		KVPair* pair = pluginOptions_.search(optionName);
-		if (pair) pair->setValue(optionValue);
-		else
-		{
-			Messenger::error("Option '" + optionName + "' is not recognised by this plugin.");
-			Messenger::error("Available options are: " + pluginOptions_.keys());
-			return false;
-		}
-		return true;
-	}
-	// Set plugin options
-	bool setOptions(KVMap options)
-	{
-		bool result = true;
-		for (KVPair* pair = options.pairs(); pair != NULL; pair = pair->next) if (!setOption(pair->key(), pair->value())) result = false;
-
-		return result;
-	}
-	// Return options specific to this plugin (read-only)
-	const KVMap& pluginOptions()
-	{
-		return pluginOptions_;
-	}
-	// Return conversion of supplied QString to bool
-	static bool toBool(QString string)
-	{
-		if ((string.toInt() == 1) || (string.toLower() == "true") || (string.toLower() == "on")) return true;
-		return false;
-	}
 };
 
 ATEN_END_NAMESPACE
diff --git a/src/plugins/interfaces/methodplugin.h b/src/plugins/interfaces/methodplugin.h
index 06279b23e..7557030c5 100644
--- a/src/plugins/interfaces/methodplugin.h
+++ b/src/plugins/interfaces/methodplugin.h
@@ -185,10 +185,6 @@ class MethodPluginInterface : public BasePluginInterface
 	/*
 	 * Options
 	 */
-	protected:
-	// Options specific to this plugin
-	KVMap pluginOptions_;
-
 	public:
 	// Return whether the plugin has options
 	virtual bool hasOptions() = 0;
diff --git a/src/plugins/interfaces/toolplugin.h b/src/plugins/interfaces/toolplugin.h
index 08cad5fd6..ca27a6a8f 100644
--- a/src/plugins/interfaces/toolplugin.h
+++ b/src/plugins/interfaces/toolplugin.h
@@ -109,8 +109,6 @@ class ToolPluginInterface : public BasePluginInterface
 	 * Tool Definition
 	 */
 	protected:
-	// Options specific to this plugin
-	KVMap pluginOptions_;
 	// Dialog for tool (if there is one)
 	QDialog* dialog_;
 
@@ -121,8 +119,6 @@ class ToolPluginInterface : public BasePluginInterface
 	virtual QIcon buttonIcon() const = 0;
 	// Return group name for tool (used to group similar tools together)
 	virtual QString groupName() const = 0;
-	// Return whether the tool is enabled (appears in the GUI)
-	virtual bool isEnabled() const = 0;
 	// Return whether the tool has a dialog
 	virtual bool hasDialog() const = 0;
 	// Show the dialog for the tool
diff --git a/src/plugins/io_akf/akf.hui b/src/plugins/io_akf/akf.hui
index 9b081410d..fc3c985a7 100644
--- a/src/plugins/io_akf/akf.hui
+++ b/src/plugins/io_akf/akf.hui
@@ -76,6 +76,8 @@ class AKFModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_akf/akf_funcs.cpp b/src/plugins/io_akf/akf_funcs.cpp
index f8b1e3898..92daac1f3 100644
--- a/src/plugins/io_akf/akf_funcs.cpp
+++ b/src/plugins/io_akf/akf_funcs.cpp
@@ -112,6 +112,12 @@ QString AKFModelPlugin::nickname() const
 	return QString("akf");
 }
 
+// Return whether the plugin is enabled
+bool AKFModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString AKFModelPlugin::description() const
 {
diff --git a/src/plugins/io_chemshell/chemshell.hui b/src/plugins/io_chemshell/chemshell.hui
index 2ad5f0688..34690cfce 100644
--- a/src/plugins/io_chemshell/chemshell.hui
+++ b/src/plugins/io_chemshell/chemshell.hui
@@ -65,6 +65,8 @@ class ChemShellModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_chemshell/chemshell_funcs.cpp b/src/plugins/io_chemshell/chemshell_funcs.cpp
index a161271ec..8a102fa07 100644
--- a/src/plugins/io_chemshell/chemshell_funcs.cpp
+++ b/src/plugins/io_chemshell/chemshell_funcs.cpp
@@ -74,6 +74,12 @@ QString ChemShellModelPlugin::nickname() const
 	return QString("chemshell");
 }
 
+// Return whether the plugin is enabled
+bool ChemShellModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString ChemShellModelPlugin::description() const
 {
diff --git a/src/plugins/io_cif/cif.hui b/src/plugins/io_cif/cif.hui
index df2aa315e..9aa9a5c20 100644
--- a/src/plugins/io_cif/cif.hui
+++ b/src/plugins/io_cif/cif.hui
@@ -64,6 +64,8 @@ class CIFModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_cif/cif_funcs.cpp b/src/plugins/io_cif/cif_funcs.cpp
index e9b89c46d..e3511f53b 100644
--- a/src/plugins/io_cif/cif_funcs.cpp
+++ b/src/plugins/io_cif/cif_funcs.cpp
@@ -71,6 +71,12 @@ QString CIFModelPlugin::nickname() const
 	return QString("cif");
 }
 
+// Return whether the plugin is enabled
+bool CIFModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString CIFModelPlugin::description() const
 {
diff --git a/src/plugins/io_csd/csd.hui b/src/plugins/io_csd/csd.hui
index b41112596..6b85c04d0 100644
--- a/src/plugins/io_csd/csd.hui
+++ b/src/plugins/io_csd/csd.hui
@@ -64,6 +64,8 @@ class CSDModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_csd/csd_funcs.cpp b/src/plugins/io_csd/csd_funcs.cpp
index 27141507e..60fc55171 100644
--- a/src/plugins/io_csd/csd_funcs.cpp
+++ b/src/plugins/io_csd/csd_funcs.cpp
@@ -70,6 +70,12 @@ QString CSDModelPlugin::nickname() const
 	return QString("csd");
 }
 
+// Return whether the plugin is enabled
+bool CSDModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString CSDModelPlugin::description() const
 {
diff --git a/src/plugins/io_cube/cube.hui b/src/plugins/io_cube/cube.hui
index 2ce38b55b..cb5875c41 100644
--- a/src/plugins/io_cube/cube.hui
+++ b/src/plugins/io_cube/cube.hui
@@ -64,6 +64,8 @@ class CUBEModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_cube/cube_funcs.cpp b/src/plugins/io_cube/cube_funcs.cpp
index 63a60246f..60af81c06 100644
--- a/src/plugins/io_cube/cube_funcs.cpp
+++ b/src/plugins/io_cube/cube_funcs.cpp
@@ -70,6 +70,12 @@ QString CUBEModelPlugin::nickname() const
 	return QString("cube");
 }
 
+// Return whether the plugin is enabled
+bool CUBEModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString CUBEModelPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/common.cpp b/src/plugins/io_dlpoly/common.cpp
index b0eef4bfd..e2dcf6360 100644
--- a/src/plugins/io_dlpoly/common.cpp
+++ b/src/plugins/io_dlpoly/common.cpp
@@ -130,7 +130,7 @@ bool DLPOLYPluginCommon::readCONFIGModel ( FilePluginInterface* plugin, FilePars
   } while ( (!parser.eofOrBlank()) );
 
   // Shift atoms by half-cell
-  bool shift = FilePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
+  bool shift = BasePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
   if (shift && targetModel->isPeriodic())
   {
     targetModel->selectAll(true);
@@ -211,8 +211,8 @@ bool DLPOLYPluginCommon::writeCONFIGModel (FilePluginInterface* plugin, FilePars
 
   // Write atom information
   int k=1;
-  bool useTypeNames = FilePluginInterface::toBool(plugin->pluginOptions().value("useTypeNames"));
-  bool shift = (FilePluginInterface::toBool(plugin->pluginOptions().value("shiftCell")) && sourceModel->isPeriodic());
+  bool useTypeNames = BasePluginInterface::toBool(plugin->pluginOptions().value("useTypeNames"));
+  bool shift = (BasePluginInterface::toBool(plugin->pluginOptions().value("shiftCell")) && sourceModel->isPeriodic());
   Vec3<double> r;
 
   for ( Atom* i = sourceModel->atoms(); i != NULL; i = i->next ) {
@@ -385,7 +385,7 @@ bool DLPOLYPluginCommon::readUnformattedFrame(FilePluginInterface* plugin, FileP
   // Create atoms - if we read in atom information in the header we will have the names and masses
   // If these arrays are empty, use the parent model. If it doesn't contain enough atoms, create a dummy atom
   Atom* i = targetModel->parent()->atoms(), *j;
-  bool shiftCell = FilePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
+  bool shiftCell = BasePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
   Vec3<double> r;
   for (int n = 0; n<nAtoms; ++n)
   {
@@ -612,7 +612,7 @@ bool DLPOLYPluginCommon::readDEFECTSModel ( FilePluginInterface* plugin, FilePar
   if (nDef>0){
 
     if (nInter>0){
-      int readInter=FilePluginInterface::toBool(plugin->pluginOptions().value("interstitial"));  
+      int readInter=BasePluginInterface::toBool(plugin->pluginOptions().value("interstitial"));  
       if (readInter){
         do {
           if ( !parser.parseLine() ) {
@@ -635,7 +635,7 @@ bool DLPOLYPluginCommon::readDEFECTSModel ( FilePluginInterface* plugin, FilePar
     }
 
     if (nVac>0) {
-      int readVac=FilePluginInterface::toBool(plugin->pluginOptions().value("vacancy"));  
+      int readVac=BasePluginInterface::toBool(plugin->pluginOptions().value("vacancy"));  
       if (readVac){
         do {
           if ( !parser.parseLine() ) {
@@ -658,7 +658,7 @@ bool DLPOLYPluginCommon::readDEFECTSModel ( FilePluginInterface* plugin, FilePar
     }
 
     // Shift atoms by half-cell
-    bool shift = FilePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
+    bool shift = BasePluginInterface::toBool(plugin->pluginOptions().value("shiftCell"));
     if (shift && targetModel->isPeriodic())
     {
       targetModel->selectAll(true);
diff --git a/src/plugins/io_dlpoly/defects4.hui b/src/plugins/io_dlpoly/defects4.hui
index ba755a46f..780d7f217 100644
--- a/src/plugins/io_dlpoly/defects4.hui
+++ b/src/plugins/io_dlpoly/defects4.hui
@@ -61,6 +61,8 @@ class DLP4DefectsPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/defects4_funcs.cpp b/src/plugins/io_dlpoly/defects4_funcs.cpp
index 9a17d2b87..a6a643bfb 100644
--- a/src/plugins/io_dlpoly/defects4_funcs.cpp
+++ b/src/plugins/io_dlpoly/defects4_funcs.cpp
@@ -81,6 +81,12 @@ QString DLP4DefectsPlugin::nickname() const
 	return QString("dlpoly4def");
 }
 
+// Return whether the plugin is enabled
+bool DLP4DefectsPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLP4DefectsPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/dlp2.hui b/src/plugins/io_dlpoly/dlp2.hui
index f91e6f5a7..38f99c633 100644
--- a/src/plugins/io_dlpoly/dlp2.hui
+++ b/src/plugins/io_dlpoly/dlp2.hui
@@ -65,6 +65,8 @@ class DLP2ModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/dlp2_funcs.cpp b/src/plugins/io_dlpoly/dlp2_funcs.cpp
index 2c3e78e77..f25dfd3b4 100644
--- a/src/plugins/io_dlpoly/dlp2_funcs.cpp
+++ b/src/plugins/io_dlpoly/dlp2_funcs.cpp
@@ -83,6 +83,12 @@ QString DLP2ModelPlugin::nickname() const
     return QString ( "dlpoly2" );
 }
 
+// Return whether the plugin is enabled
+bool DLP2ModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLP2ModelPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/dlp4.hui b/src/plugins/io_dlpoly/dlp4.hui
index f6dbaaf7d..1bcad3411 100644
--- a/src/plugins/io_dlpoly/dlp4.hui
+++ b/src/plugins/io_dlpoly/dlp4.hui
@@ -62,6 +62,8 @@ class DLP4ModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/dlp4_funcs.cpp b/src/plugins/io_dlpoly/dlp4_funcs.cpp
index 36da5469c..e3d9235db 100644
--- a/src/plugins/io_dlpoly/dlp4_funcs.cpp
+++ b/src/plugins/io_dlpoly/dlp4_funcs.cpp
@@ -81,6 +81,12 @@ QString DLP4ModelPlugin::nickname() const
     return QString ( "dlpoly4" );
 }
 
+// Return whether the plugin is enabled
+bool DLP4ModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLP4ModelPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/field.hui b/src/plugins/io_dlpoly/field.hui
index ca7ee1790..12ae9696b 100644
--- a/src/plugins/io_dlpoly/field.hui
+++ b/src/plugins/io_dlpoly/field.hui
@@ -61,6 +61,8 @@ class DLPExpressionPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/field_funcs.cpp b/src/plugins/io_dlpoly/field_funcs.cpp
index 66ff23012..6ac5bc2ca 100644
--- a/src/plugins/io_dlpoly/field_funcs.cpp
+++ b/src/plugins/io_dlpoly/field_funcs.cpp
@@ -78,6 +78,12 @@ QString DLPExpressionPlugin::nickname() const
 	return QString("dlpolyfield");
 }
 
+// Return whether the plugin is enabled
+bool DLPExpressionPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLPExpressionPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/history2.hui b/src/plugins/io_dlpoly/history2.hui
index c11dfb19a..386e447dc 100644
--- a/src/plugins/io_dlpoly/history2.hui
+++ b/src/plugins/io_dlpoly/history2.hui
@@ -63,6 +63,8 @@ class DLP2TrajectoryPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/history2_funcs.cpp b/src/plugins/io_dlpoly/history2_funcs.cpp
index c3adac302..459908bee 100644
--- a/src/plugins/io_dlpoly/history2_funcs.cpp
+++ b/src/plugins/io_dlpoly/history2_funcs.cpp
@@ -81,6 +81,12 @@ QString DLP2TrajectoryPlugin::nickname() const
 	return QString("dlpoly2his");
 }
 
+// Return whether the plugin is enabled
+bool DLP2TrajectoryPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLP2TrajectoryPlugin::description() const
 {
diff --git a/src/plugins/io_dlpoly/history4.hui b/src/plugins/io_dlpoly/history4.hui
index ee4975462..e83dd96f0 100644
--- a/src/plugins/io_dlpoly/history4.hui
+++ b/src/plugins/io_dlpoly/history4.hui
@@ -62,6 +62,8 @@ class DLP4TrajectoryPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlpoly/history4_funcs.cpp b/src/plugins/io_dlpoly/history4_funcs.cpp
index b30c388b9..47150beba 100644
--- a/src/plugins/io_dlpoly/history4_funcs.cpp
+++ b/src/plugins/io_dlpoly/history4_funcs.cpp
@@ -79,6 +79,12 @@ QString DLP4TrajectoryPlugin::nickname() const
 	return QString("dlpoly4his");
 }
 
+// Return whether the plugin is enabled
+bool DLP4TrajectoryPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString DLP4TrajectoryPlugin::description() const
 {
diff --git a/src/plugins/io_dlputils/pdens.hui b/src/plugins/io_dlputils/pdens.hui
index e05b0b596..90ba5bf77 100644
--- a/src/plugins/io_dlputils/pdens.hui
+++ b/src/plugins/io_dlputils/pdens.hui
@@ -64,6 +64,8 @@ class PDensGridPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlputils/pdens_funcs.cpp b/src/plugins/io_dlputils/pdens_funcs.cpp
index bd157cc4a..b222a4560 100644
--- a/src/plugins/io_dlputils/pdens_funcs.cpp
+++ b/src/plugins/io_dlputils/pdens_funcs.cpp
@@ -70,6 +70,12 @@ QString PDensGridPlugin::nickname() const
 	return QString("pdens");
 }
 
+// Return whether the plugin is enabled
+bool PDensGridPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString PDensGridPlugin::description() const
 {
diff --git a/src/plugins/io_dlputils/surface.hui b/src/plugins/io_dlputils/surface.hui
index a3713a402..389a7fd0c 100644
--- a/src/plugins/io_dlputils/surface.hui
+++ b/src/plugins/io_dlputils/surface.hui
@@ -64,6 +64,8 @@ class SurfaceGridPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_dlputils/surface_funcs.cpp b/src/plugins/io_dlputils/surface_funcs.cpp
index fca74fad9..2f5314719 100644
--- a/src/plugins/io_dlputils/surface_funcs.cpp
+++ b/src/plugins/io_dlputils/surface_funcs.cpp
@@ -70,6 +70,12 @@ QString SurfaceGridPlugin::nickname() const
 	return QString("dlpsurf");
 }
 
+// Return whether the plugin is enabled
+bool SurfaceGridPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString SurfaceGridPlugin::description() const
 {
diff --git a/src/plugins/io_epsr/ato.hui b/src/plugins/io_epsr/ato.hui
index 308873bcc..6fefb1753 100644
--- a/src/plugins/io_epsr/ato.hui
+++ b/src/plugins/io_epsr/ato.hui
@@ -64,6 +64,8 @@ class EPSRAtoModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_epsr/ato_funcs.cpp b/src/plugins/io_epsr/ato_funcs.cpp
index 8c4cf855b..ab45d9bb5 100644
--- a/src/plugins/io_epsr/ato_funcs.cpp
+++ b/src/plugins/io_epsr/ato_funcs.cpp
@@ -89,6 +89,12 @@ QString EPSRAtoModelPlugin::nickname() const
 	return QString("epsrato");
 }
 
+// Return whether the plugin is enabled
+bool EPSRAtoModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString EPSRAtoModelPlugin::description() const
 {
diff --git a/src/plugins/io_epsr/mol.hui b/src/plugins/io_epsr/mol.hui
index 6a32e34f8..9e6870a55 100644
--- a/src/plugins/io_epsr/mol.hui
+++ b/src/plugins/io_epsr/mol.hui
@@ -64,6 +64,8 @@ class EPSRMolModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_epsr/mol_funcs.cpp b/src/plugins/io_epsr/mol_funcs.cpp
index 7cbd0931f..859dbea23 100644
--- a/src/plugins/io_epsr/mol_funcs.cpp
+++ b/src/plugins/io_epsr/mol_funcs.cpp
@@ -84,6 +84,12 @@ QString EPSRMolModelPlugin::nickname() const
 	return QString("epsrmol");
 }
 
+// Return whether the plugin is enabled
+bool EPSRMolModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString EPSRMolModelPlugin::description() const
 {
diff --git a/src/plugins/io_espresso/espressoin.hui b/src/plugins/io_espresso/espressoin.hui
index c9c10fa7f..bee0fedae 100644
--- a/src/plugins/io_espresso/espressoin.hui
+++ b/src/plugins/io_espresso/espressoin.hui
@@ -59,6 +59,8 @@ class QEInModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_espresso/espressoin_funcs.cpp b/src/plugins/io_espresso/espressoin_funcs.cpp
index 51533a383..3f6c07177 100644
--- a/src/plugins/io_espresso/espressoin_funcs.cpp
+++ b/src/plugins/io_espresso/espressoin_funcs.cpp
@@ -70,6 +70,12 @@ QString QEInModelPlugin::nickname() const
 	return QString("espresso");
 }
 
+// Return whether the plugin is enabled
+bool QEInModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString QEInModelPlugin::description() const
 {
diff --git a/src/plugins/io_espresso/espressoout.hui b/src/plugins/io_espresso/espressoout.hui
index ca37cfbf3..91324f157 100644
--- a/src/plugins/io_espresso/espressoout.hui
+++ b/src/plugins/io_espresso/espressoout.hui
@@ -59,6 +59,8 @@ class QEOutModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_espresso/espressoout_funcs.cpp b/src/plugins/io_espresso/espressoout_funcs.cpp
index 690dabf8f..e96c84a59 100644
--- a/src/plugins/io_espresso/espressoout_funcs.cpp
+++ b/src/plugins/io_espresso/espressoout_funcs.cpp
@@ -64,6 +64,12 @@ QString QEOutModelPlugin::nickname() const
 	return QString("espresso");
 }
 
+// Return whether the plugin is enabled
+bool QEOutModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString QEOutModelPlugin::description() const
 {
diff --git a/src/plugins/io_ff/ff.hui b/src/plugins/io_ff/ff.hui
index 87b3df10d..1177bda3e 100644
--- a/src/plugins/io_ff/ff.hui
+++ b/src/plugins/io_ff/ff.hui
@@ -64,6 +64,8 @@ class AtenExpressionPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_ff/ff_funcs.cpp b/src/plugins/io_ff/ff_funcs.cpp
index b51eb9d1c..6b7edde13 100644
--- a/src/plugins/io_ff/ff_funcs.cpp
+++ b/src/plugins/io_ff/ff_funcs.cpp
@@ -71,6 +71,12 @@ QString AtenExpressionPlugin::nickname() const
 	return QString("ff");
 }
 
+// Return whether the plugin is enabled
+bool AtenExpressionPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString AtenExpressionPlugin::description() const
 {
diff --git a/src/plugins/io_gamessus/gamessus.hui b/src/plugins/io_gamessus/gamessus.hui
index 3e12e961b..b417e4f44 100644
--- a/src/plugins/io_gamessus/gamessus.hui
+++ b/src/plugins/io_gamessus/gamessus.hui
@@ -64,6 +64,8 @@ class GAMESSUSModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_gamessus/gamessus_funcs.cpp b/src/plugins/io_gamessus/gamessus_funcs.cpp
index c9ae1e9b0..63651e362 100644
--- a/src/plugins/io_gamessus/gamessus_funcs.cpp
+++ b/src/plugins/io_gamessus/gamessus_funcs.cpp
@@ -71,6 +71,12 @@ QString GAMESSUSModelPlugin::nickname() const
 	return QString("gamus");
 }
 
+// Return whether the plugin is enabled
+bool GAMESSUSModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString GAMESSUSModelPlugin::description() const
 {
diff --git a/src/plugins/io_gaussian/gaussian.hui b/src/plugins/io_gaussian/gaussian.hui
index 8f7c5d366..7bed053a0 100644
--- a/src/plugins/io_gaussian/gaussian.hui
+++ b/src/plugins/io_gaussian/gaussian.hui
@@ -64,6 +64,8 @@ class GaussianModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_gaussian/gaussian_funcs.cpp b/src/plugins/io_gaussian/gaussian_funcs.cpp
index 0eede080b..462f65af1 100644
--- a/src/plugins/io_gaussian/gaussian_funcs.cpp
+++ b/src/plugins/io_gaussian/gaussian_funcs.cpp
@@ -70,6 +70,12 @@ QString GaussianModelPlugin::nickname() const
 	return QString("gaussian");
 }
 
+// Return whether the plugin is enabled
+bool GaussianModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString GaussianModelPlugin::description() const
 {
diff --git a/src/plugins/io_gromacs/gromacs.hui b/src/plugins/io_gromacs/gromacs.hui
index c82bf7869..d77e17690 100644
--- a/src/plugins/io_gromacs/gromacs.hui
+++ b/src/plugins/io_gromacs/gromacs.hui
@@ -64,6 +64,8 @@ class GROMACSModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_gromacs/gromacs_funcs.cpp b/src/plugins/io_gromacs/gromacs_funcs.cpp
index 2c5db7fc3..8ad3d707f 100644
--- a/src/plugins/io_gromacs/gromacs_funcs.cpp
+++ b/src/plugins/io_gromacs/gromacs_funcs.cpp
@@ -70,6 +70,12 @@ QString GROMACSModelPlugin::nickname() const
 	return QString("gromacs");
 }
 
+// Return whether the plugin is enabled
+bool GROMACSModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString GROMACSModelPlugin::description() const
 {
diff --git a/src/plugins/io_mdlmol/mdlmol.hui b/src/plugins/io_mdlmol/mdlmol.hui
index 095a555e8..ab024af84 100644
--- a/src/plugins/io_mdlmol/mdlmol.hui
+++ b/src/plugins/io_mdlmol/mdlmol.hui
@@ -64,6 +64,8 @@ class MOLModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_mdlmol/mdlmol_funcs.cpp b/src/plugins/io_mdlmol/mdlmol_funcs.cpp
index d3e244491..b74e7546a 100644
--- a/src/plugins/io_mdlmol/mdlmol_funcs.cpp
+++ b/src/plugins/io_mdlmol/mdlmol_funcs.cpp
@@ -70,6 +70,12 @@ QString MOLModelPlugin::nickname() const
 	return QString("mol");
 }
 
+// Return whether the plugin is enabled
+bool MOLModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOLModelPlugin::description() const
 {
diff --git a/src/plugins/io_mopac/mopacarc.hui b/src/plugins/io_mopac/mopacarc.hui
index 12dc2bed4..41ddc218b 100644
--- a/src/plugins/io_mopac/mopacarc.hui
+++ b/src/plugins/io_mopac/mopacarc.hui
@@ -64,6 +64,8 @@ class MOPACArcModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_mopac/mopacarc_funcs.cpp b/src/plugins/io_mopac/mopacarc_funcs.cpp
index d5397f80d..655350420 100644
--- a/src/plugins/io_mopac/mopacarc_funcs.cpp
+++ b/src/plugins/io_mopac/mopacarc_funcs.cpp
@@ -71,6 +71,12 @@ QString MOPACArcModelPlugin::nickname() const
 	return QString("mopacarc");
 }
 
+// Return whether the plugin is enabled
+bool MOPACArcModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOPACArcModelPlugin::description() const
 {
diff --git a/src/plugins/io_mopac/mopaccontrol.hui b/src/plugins/io_mopac/mopaccontrol.hui
index 2e6981925..0ad3fdd3a 100644
--- a/src/plugins/io_mopac/mopaccontrol.hui
+++ b/src/plugins/io_mopac/mopaccontrol.hui
@@ -64,6 +64,8 @@ class MOPACControlModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_mopac/mopaccontrol_funcs.cpp b/src/plugins/io_mopac/mopaccontrol_funcs.cpp
index a19a69199..d924a5a18 100644
--- a/src/plugins/io_mopac/mopaccontrol_funcs.cpp
+++ b/src/plugins/io_mopac/mopaccontrol_funcs.cpp
@@ -83,6 +83,12 @@ QString MOPACControlModelPlugin::nickname() const
 	return QString("mopaccontrol");
 }
 
+// Return whether the plugin is enabled
+bool MOPACControlModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOPACControlModelPlugin::description() const
 {
diff --git a/src/plugins/io_msi/msi.hui b/src/plugins/io_msi/msi.hui
index a21561443..fe6f67602 100644
--- a/src/plugins/io_msi/msi.hui
+++ b/src/plugins/io_msi/msi.hui
@@ -64,6 +64,8 @@ class MSIModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_msi/msi_funcs.cpp b/src/plugins/io_msi/msi_funcs.cpp
index 8d7be1651..d08461bbc 100644
--- a/src/plugins/io_msi/msi_funcs.cpp
+++ b/src/plugins/io_msi/msi_funcs.cpp
@@ -70,6 +70,12 @@ QString MSIModelPlugin::nickname() const
 	return QString("msi");
 }
 
+// Return whether the plugin is enabled
+bool MSIModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MSIModelPlugin::description() const
 {
diff --git a/src/plugins/io_pdb/pdb.hui b/src/plugins/io_pdb/pdb.hui
index 329a27707..9157d993e 100644
--- a/src/plugins/io_pdb/pdb.hui
+++ b/src/plugins/io_pdb/pdb.hui
@@ -64,6 +64,8 @@ class PDBModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_pdb/pdb_funcs.cpp b/src/plugins/io_pdb/pdb_funcs.cpp
index 5e357d3dc..552d46a12 100644
--- a/src/plugins/io_pdb/pdb_funcs.cpp
+++ b/src/plugins/io_pdb/pdb_funcs.cpp
@@ -78,6 +78,12 @@ QString PDBModelPlugin::nickname() const
 	return QString("pdb");
 }
 
+// Return whether the plugin is enabled
+bool PDBModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString PDBModelPlugin::description() const
 {
diff --git a/src/plugins/io_rmcprofile/rmcp3.hui b/src/plugins/io_rmcprofile/rmcp3.hui
index 6b9a6e0d0..cdfc224e3 100644
--- a/src/plugins/io_rmcprofile/rmcp3.hui
+++ b/src/plugins/io_rmcprofile/rmcp3.hui
@@ -64,6 +64,8 @@ class RMCProfile3ModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_rmcprofile/rmcp3_funcs.cpp b/src/plugins/io_rmcprofile/rmcp3_funcs.cpp
index dbb5f4a7d..f23a13739 100644
--- a/src/plugins/io_rmcprofile/rmcp3_funcs.cpp
+++ b/src/plugins/io_rmcprofile/rmcp3_funcs.cpp
@@ -73,6 +73,12 @@ QString RMCProfile3ModelPlugin::nickname() const
 	return QString("rmcp3???");
 }
 
+// Return whether the plugin is enabled
+bool RMCProfile3ModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString RMCProfile3ModelPlugin::description() const
 {
diff --git a/src/plugins/io_rmcprofile/rmcp6.hui b/src/plugins/io_rmcprofile/rmcp6.hui
index 3b58f0a84..2fb5b33ba 100644
--- a/src/plugins/io_rmcprofile/rmcp6.hui
+++ b/src/plugins/io_rmcprofile/rmcp6.hui
@@ -64,6 +64,8 @@ class RMCProfile6ModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_rmcprofile/rmcp6_funcs.cpp b/src/plugins/io_rmcprofile/rmcp6_funcs.cpp
index 819b9b479..198aae15e 100644
--- a/src/plugins/io_rmcprofile/rmcp6_funcs.cpp
+++ b/src/plugins/io_rmcprofile/rmcp6_funcs.cpp
@@ -75,6 +75,12 @@ QString RMCProfile6ModelPlugin::nickname() const
 	return QString("rmc6f");
 }
 
+// Return whether the plugin is enabled
+bool RMCProfile6ModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString RMCProfile6ModelPlugin::description() const
 {
diff --git a/src/plugins/io_rmcprofile/rmcp6bonds.hui b/src/plugins/io_rmcprofile/rmcp6bonds.hui
index d1ef81afc..fdb773f32 100644
--- a/src/plugins/io_rmcprofile/rmcp6bonds.hui
+++ b/src/plugins/io_rmcprofile/rmcp6bonds.hui
@@ -61,6 +61,8 @@ class RMCProfile6BondsModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_rmcprofile/rmcp6bonds_funcs.cpp b/src/plugins/io_rmcprofile/rmcp6bonds_funcs.cpp
index 088219fe2..e6e515e0f 100644
--- a/src/plugins/io_rmcprofile/rmcp6bonds_funcs.cpp
+++ b/src/plugins/io_rmcprofile/rmcp6bonds_funcs.cpp
@@ -72,6 +72,12 @@ QString RMCProfile6BondsModelPlugin::nickname() const
 	return QString("rmc6bonds");
 }
 
+// Return whether the plugin is enabled
+bool RMCProfile6BondsModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString RMCProfile6BondsModelPlugin::description() const
 {
diff --git a/src/plugins/io_siesta/siesta.hui b/src/plugins/io_siesta/siesta.hui
index a4b32940b..90a96384b 100644
--- a/src/plugins/io_siesta/siesta.hui
+++ b/src/plugins/io_siesta/siesta.hui
@@ -64,6 +64,8 @@ class SiestaModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_siesta/siesta_funcs.cpp b/src/plugins/io_siesta/siesta_funcs.cpp
index 330bfd93c..4431cfd41 100644
--- a/src/plugins/io_siesta/siesta_funcs.cpp
+++ b/src/plugins/io_siesta/siesta_funcs.cpp
@@ -70,6 +70,12 @@ QString SiestaModelPlugin::nickname() const
 	return QString("siesta");
 }
 
+// Return whether the plugin is enabled
+bool SiestaModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString SiestaModelPlugin::description() const
 {
diff --git a/src/plugins/io_sybylmol2/mol2.hui b/src/plugins/io_sybylmol2/mol2.hui
index 58da772ef..bdcb24d73 100644
--- a/src/plugins/io_sybylmol2/mol2.hui
+++ b/src/plugins/io_sybylmol2/mol2.hui
@@ -64,6 +64,8 @@ class Mol2ModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_sybylmol2/mol2_funcs.cpp b/src/plugins/io_sybylmol2/mol2_funcs.cpp
index a749ea0e6..de4f5bd6d 100644
--- a/src/plugins/io_sybylmol2/mol2_funcs.cpp
+++ b/src/plugins/io_sybylmol2/mol2_funcs.cpp
@@ -70,6 +70,12 @@ QString Mol2ModelPlugin::nickname() const
 	return QString("mol2");
 }
 
+// Return whether the plugin is enabled
+bool Mol2ModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString Mol2ModelPlugin::description() const
 {
diff --git a/src/plugins/io_vfield/vfield.hui b/src/plugins/io_vfield/vfield.hui
index d2a66a01f..110e109ee 100644
--- a/src/plugins/io_vfield/vfield.hui
+++ b/src/plugins/io_vfield/vfield.hui
@@ -64,6 +64,8 @@ class VFieldModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_vfield/vfield_funcs.cpp b/src/plugins/io_vfield/vfield_funcs.cpp
index d370c3731..c05575e2d 100644
--- a/src/plugins/io_vfield/vfield_funcs.cpp
+++ b/src/plugins/io_vfield/vfield_funcs.cpp
@@ -70,6 +70,12 @@ QString VFieldModelPlugin::nickname() const
 	return QString("vfield");
 }
 
+// Return whether the plugin is enabled
+bool VFieldModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString VFieldModelPlugin::description() const
 {
diff --git a/src/plugins/io_xyz/xyz.hui b/src/plugins/io_xyz/xyz.hui
index 0d3956c9c..b942f8c54 100644
--- a/src/plugins/io_xyz/xyz.hui
+++ b/src/plugins/io_xyz/xyz.hui
@@ -64,6 +64,8 @@ class XYZModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_xyz/xyz_funcs.cpp b/src/plugins/io_xyz/xyz_funcs.cpp
index 561946f76..5e3651520 100644
--- a/src/plugins/io_xyz/xyz_funcs.cpp
+++ b/src/plugins/io_xyz/xyz_funcs.cpp
@@ -76,6 +76,12 @@ QString XYZModelPlugin::nickname() const
 	return QString("xyz");
 }
 
+// Return whether the plugin is enabled
+bool XYZModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString XYZModelPlugin::description() const
 {
diff --git a/src/plugins/io_xyz/xyztraj.hui b/src/plugins/io_xyz/xyztraj.hui
index f404ac439..8f8b4625c 100644
--- a/src/plugins/io_xyz/xyztraj.hui
+++ b/src/plugins/io_xyz/xyztraj.hui
@@ -64,6 +64,8 @@ class XYZTrajectoryPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/io_xyz/xyztraj_funcs.cpp b/src/plugins/io_xyz/xyztraj_funcs.cpp
index 466197c00..741c9213f 100644
--- a/src/plugins/io_xyz/xyztraj_funcs.cpp
+++ b/src/plugins/io_xyz/xyztraj_funcs.cpp
@@ -73,6 +73,12 @@ QString XYZTrajectoryPlugin::nickname() const
 	return QString("xyz");
 }
 
+// Return whether the plugin is enabled
+bool XYZTrajectoryPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString XYZTrajectoryPlugin::description() const
 {
diff --git a/src/plugins/method_mopac71/mopac71.hui b/src/plugins/method_mopac71/mopac71.hui
index 72b9a8b02..45cf302d3 100644
--- a/src/plugins/method_mopac71/mopac71.hui
+++ b/src/plugins/method_mopac71/mopac71.hui
@@ -64,6 +64,8 @@ class MOPAC71MethodPlugin : public QObject, public MethodPluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 
diff --git a/src/plugins/method_mopac71/mopac71_funcs.cpp b/src/plugins/method_mopac71/mopac71_funcs.cpp
index f89909b12..cd9e7eb5f 100644
--- a/src/plugins/method_mopac71/mopac71_funcs.cpp
+++ b/src/plugins/method_mopac71/mopac71_funcs.cpp
@@ -74,6 +74,12 @@ QString MOPAC71MethodPlugin::nickname() const
 	return QString("mopac71");
 }
 
+// Return whether the plugin is enabled
+bool MOPAC71MethodPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOPAC71MethodPlugin::description() const
 {
diff --git a/src/plugins/method_mopac71/mopac71control.hui b/src/plugins/method_mopac71/mopac71control.hui
index c49dd662c..064773ffd 100644
--- a/src/plugins/method_mopac71/mopac71control.hui
+++ b/src/plugins/method_mopac71/mopac71control.hui
@@ -64,6 +64,8 @@ class MOPAC71ControlModelPlugin : public QObject, public FilePluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 	// Return related file extensions
diff --git a/src/plugins/method_mopac71/mopac71control_funcs.cpp b/src/plugins/method_mopac71/mopac71control_funcs.cpp
index 5eb3e3a0b..f9fd86504 100644
--- a/src/plugins/method_mopac71/mopac71control_funcs.cpp
+++ b/src/plugins/method_mopac71/mopac71control_funcs.cpp
@@ -74,6 +74,12 @@ QString MOPAC71ControlModelPlugin::nickname() const
 	return QString("mopac71control");
 }
 
+// Return whether the plugin is enabled
+bool MOPAC71ControlModelPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOPAC71ControlModelPlugin::description() const
 {
diff --git a/src/plugins/method_mopac71/mopac71opt.hui b/src/plugins/method_mopac71/mopac71opt.hui
index 0cd448fec..6a0d9c1c0 100644
--- a/src/plugins/method_mopac71/mopac71opt.hui
+++ b/src/plugins/method_mopac71/mopac71opt.hui
@@ -64,6 +64,8 @@ class MOPAC71OptimisationPlugin : public QObject, public MethodPluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 
diff --git a/src/plugins/method_mopac71/mopac71opt_funcs.cpp b/src/plugins/method_mopac71/mopac71opt_funcs.cpp
index e23164b8a..e129ff8c2 100644
--- a/src/plugins/method_mopac71/mopac71opt_funcs.cpp
+++ b/src/plugins/method_mopac71/mopac71opt_funcs.cpp
@@ -75,6 +75,12 @@ QString MOPAC71OptimisationPlugin::nickname() const
 	return QString("mopac71opt");
 }
 
+// Return whether the plugin is enabled
+bool MOPAC71OptimisationPlugin::enabled() const
+{
+	return true;
+}
+
 // Description (long name) of plugin
 QString MOPAC71OptimisationPlugin::description() const
 {
diff --git a/src/plugins/tool_test/testtool.hui b/src/plugins/tool_test/testtool.hui
index 36fd5f2de..450eb4237 100644
--- a/src/plugins/tool_test/testtool.hui
+++ b/src/plugins/tool_test/testtool.hui
@@ -64,6 +64,8 @@ class TestToolPlugin : public QObject, public ToolPluginInterface
 	QString name() const;
 	// Return nickname of plugin
 	QString nickname() const;
+	// Return whether plugin is enabled
+	bool enabled() const;
 	// Return description (long name) of plugin
 	QString description() const;
 
diff --git a/src/plugins/tool_test/testtool_funcs.cpp b/src/plugins/tool_test/testtool_funcs.cpp
index 8b71dbedc..e679719f6 100644
--- a/src/plugins/tool_test/testtool_funcs.cpp
+++ b/src/plugins/tool_test/testtool_funcs.cpp
@@ -79,6 +79,12 @@ QString TestToolPlugin::nickname() const
 	return QString("testtool");
 }
 
+// Return whether the plugin is enabled
+bool TestToolPlugin::enabled() const
+{
+	return false;
+}
+
 // Description (long name) of plugin
 QString TestToolPlugin::description() const
 {