diff --git a/DESCRIPTION b/DESCRIPTION
index 063dc5746..ba8b378b4 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: pomp2
 Type: Package
 Title: Statistical Inference for Partially Observed Markov Processes
-Version: 2.0.6.1
-Date: 2018-10-02
+Version: 2.0.6.2
+Date: 2018-12-13
 Authors@R: c(person(given=c("Aaron","A."),family="King",
 		role=c("aut","cre"),email="kingaa@umich.edu"),
 	  person(given=c("Edward","L."),family="Ionides",role=c("aut")),
diff --git a/R/mif2.R b/R/mif2.R
index 2de5d3788..054e00bee 100644
--- a/R/mif2.R
+++ b/R/mif2.R
@@ -583,7 +583,7 @@ perturbn.kernel.sd <- function (rw.sd, time, paramnames) {
     unrec <- names(rw.sd)[!names(rw.sd) %in% paramnames]
     pStop_("the following parameter(s), ",
       "given random walks in ",sQuote("rw.sd"),", are not present in ",
-      sQuote("start"),": ",paste(sapply(unrec,sQuote),collapse=","),".")
+      sQuote("params"),": ",paste(sapply(unrec,sQuote),collapse=","),".")
   }
   ivp <- function (sd, lag = 1L) {
     sd*(seq_along(time)==lag)
diff --git a/TODO.md b/TODO.md
index 02d2ab791..7c19bc55c 100644
--- a/TODO.md
+++ b/TODO.md
@@ -50,6 +50,7 @@
 - what does a generic `pomp.fun` interface look like?
 - should parameter transformations allow renaming of variables?
 	- would require attention to `rw.sd`, e.g.
+- weighted particle filter
 
 ## For pomp:
 
diff --git a/inst/NEWS b/inst/NEWS
index 9beddae28..787a76957 100644
--- a/inst/NEWS
+++ b/inst/NEWS
@@ -1,5 +1,25 @@
 _N_e_w_s _f_o_r _p_a_c_k_a_g_e '_p_o_m_p'
 
+_C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _2._0._6:
+
+        • More examples have been included.
+
+        • Minor changes to error messages.
+
+_C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _2._0._5:
+
+        • The names of the ‘objfun’ methods have been changed to
+          ‘probe_objfun’, ‘spect_objfun’, ‘traj_objfun’, and
+          ‘nlf_objfun’.
+
+_C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _2._0._4:
+
+        • The package directory structure has been modified to include
+          a new ‘examples’ directory, which holds the examples used in
+          the documentation.
+
+        • The names of the ‘objfun’ methods have been shortened.
+
 _C_h_a_n_g_e_s _i_n '_p_o_m_p' _v_e_r_s_i_o_n _2._0._3:
 
         • It is now permissible that the sequence of observation times
diff --git a/inst/NEWS.Rd b/inst/NEWS.Rd
index bdf765f13..554c2e141 100644
--- a/inst/NEWS.Rd
+++ b/inst/NEWS.Rd
@@ -1,5 +1,22 @@
 \name{NEWS}
 \title{News for package `pomp'}
+\section{Changes in \pkg{pomp} version 2.0.6}{
+  \itemize{
+    \item More examples have been included.
+    \item Minor changes to error messages.
+  }
+}
+\section{Changes in \pkg{pomp} version 2.0.5}{
+  \itemize{
+    \item The names of the \sQuote{objfun} methods have been changed to \code{probe_objfun}, \code{spect_objfun}, \code{traj_objfun}, and \code{nlf_objfun}.
+  }
+}
+\section{Changes in \pkg{pomp} version 2.0.4}{
+  \itemize{
+    \item The package directory structure has been modified to include a new \file{examples} directory, which holds the examples used in the documentation.
+    \item The names of the \sQuote{objfun} methods have been shortened.
+  }
+}
 \section{Changes in \pkg{pomp} version 2.0.3}{
   \itemize{
     \item It is now permissible that the sequence of observation times (and sequences of covariate times) be merely non-decreasing sequences.
diff --git a/tests/mif2.Rout.save b/tests/mif2.Rout.save
index 90372e341..96f0f27c4 100644
--- a/tests/mif2.Rout.save
+++ b/tests/mif2.Rout.save
@@ -135,7 +135,7 @@ Error : in 'mif2': 'rw.sd' should be specified using the 'rw.sd' function. See '
 > try(mif2(po,Nmif=1,Np=100,rw.sd=rw.sd()))
 Error : in 'mif2': in 'rw.sd': parameters must be referenced by name.
 > try(mif2(po,Nmif=1,Np=100,rw.sd=rw.sd(a=9)))
-Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'start': 'a'.
+Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'params': 'a'.
 > try(mif2(po,Nmif=1,Np=100,rw.sd=rw.sd(sigma=1:1000)))
 Error : in 'mif2': 'rw.sd' spec for parameter 'sigma' does not evaluate to a vector of the correct length ('length(time(object))'=10).
 > try(mif2(po,Nmif=1,Np=100,rw.sd=rw.sd(sigma=0.1)))
@@ -154,9 +154,9 @@ Error : in 'mif2': 'cooling.fraction.50' must be in (0,1].
 +   cooling.type="geometric",tol=-3))
 Error : in 'mif2': 'tol' should be a small positive number.
 > try(mif2(po,params=NULL,Nmif=1,Np=100,rw.sd=rw.sd(sigma=0.1)))
-Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'start': 'sigma'.
+Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'params': 'sigma'.
 > try(mif2(po,params=list(),Nmif=1,Np=100,rw.sd=rw.sd(sigma=0.1)))
-Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'start': 'sigma'.
+Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'params': 'sigma'.
 > try(mif2(po,params=list(NULL),Nmif=1,Np=100,rw.sd=rw.sd(sigma=0.1)))
 Error : in 'mif2': (list) object cannot be coerced to type 'double'
 > try(mif2(po,params=c(3,2,1),Nmif=1,Np=100,rw.sd=rw.sd(sigma=0.1)))
@@ -205,7 +205,7 @@ Error : in 'mif2': 'rprocess', 'dmeasure' are needed basic components.
 > try(mif2(po,Nmif=2,Np=50,rw.sd=rw.sd(sigma=0.01),cooling.fraction.50=0.1,rprocess=NULL))
 Error : in 'mif2': 'rprocess', 'dmeasure' are needed basic components.
 > try(mif2(po,Nmif=2,Np=50,rw.sd=rw.sd(sigma=0.01),cooling.fraction.50=0.1,params=NULL))
-Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'start': 'sigma'.
+Error : in 'mif2': the following parameter(s), given random walks in 'rw.sd', are not present in 'params': 'sigma'.
 > 
 > theta <- coef(po)
 > theta["sigma"] <- 0.2