diff --git a/com_podcastmanager/admin/models/fields/podcastmedia.php b/com_podcastmanager/admin/models/fields/podcastmedia.php
index 513ba4dd..0fdc30de 100644
--- a/com_podcastmanager/admin/models/fields/podcastmedia.php
+++ b/com_podcastmanager/admin/models/fields/podcastmedia.php
@@ -73,7 +73,7 @@ protected function getInput()
 			$script[] = '		if (old_id != id) {';
 			$script[] = '			var elem = document.id(id)';
 			$script[] = '			elem.value = value;';
-			$script[] = '			elem.onchange();';
+			$script[] = '			elem.dispatchEvent(new Event(\'change\'));';
 			$script[] = '		}';
 			$script[] = '	}';
 
diff --git a/com_podcastmanager/admin/models/podcast.php b/com_podcastmanager/admin/models/podcast.php
index 20ef4cfd..26eb8ec4 100644
--- a/com_podcastmanager/admin/models/podcast.php
+++ b/com_podcastmanager/admin/models/podcast.php
@@ -569,7 +569,7 @@ protected function loadFormData()
 	 *
 	 * @since   1.6
 	 */
-	protected function prepareTable(&$table)
+	protected function prepareTable($table)
 	{
 		// Set the publish date to now
 		if ($table->published == 1 && intval($table->publish_up) == 0)
diff --git a/com_podcastmanager/admin/tables/podcast.php b/com_podcastmanager/admin/tables/podcast.php
index 85215b98..d884b329 100644
--- a/com_podcastmanager/admin/tables/podcast.php
+++ b/com_podcastmanager/admin/tables/podcast.php
@@ -96,7 +96,7 @@ protected function _getAssetTitle()
 	 *
 	 * @since   2.0
 	 */
-	protected function _getAssetParentId($table = null, $id = null)
+	protected function _getAssetParentId(JTable $table = null, $id = null)
 	{
 		// Initialise variables.
 		$assetId = null;
diff --git a/script.php b/script.php
index d276f045..4b13f7c6 100644
--- a/script.php
+++ b/script.php
@@ -174,6 +174,7 @@ public function update($parent)
 	 */
 	public function postflight($type, $parent, $results)
 	{
+		$strapped = false;
 		// If in CMS 3, install the Strapped layouts
 		if (version_compare(JVERSION, '3.0', 'ge') && $type == 'install')
 		{