diff --git a/matlab/gatdaem1d_functions/gatdaem1d_forwardmodel.m b/matlab/gatdaem1d_functions/gatdaem1d_forwardmodel.m
index a73bbf6..89069d3 100644
--- a/matlab/gatdaem1d_functions/gatdaem1d_forwardmodel.m
+++ b/matlab/gatdaem1d_functions/gatdaem1d_forwardmodel.m
@@ -11,26 +11,27 @@
 
 nlayers=length(E.conductivity);
 if(nlayers ~= 1+length(E.thickness))
-    error('Sorry the size of thicknesses must be one less than the size of conductivity');;
+    error('Sorry the length of thicknesses must be one less than the length of conductivity');;
 end
 
 if(nargin == 4)
     if(strcmpi(iptypestr,'colecole'))
-        iptype=0;
-    elseif(strcmpi(iptypestr,'pelton'))
         iptype=1;
+    elseif(strcmpi(iptypestr,'pelton'))
+        iptype=2;
     else
-        error('Sorry iptypestr must "colecole" or "pelton"');
+        error('Sorry for IP modelling iptypestr must be either "colecole" or "pelton"');
     end
+
     
     if(isfield(E,'chargeability'))
         if(nlayers ~= length(E.chargeability))
-            error('Sorry the size of chargeability must equal to the size of conductivity');;
+            error('Sorry the length of chargeability must equal to the length of conductivity');;
         end
         
         if(isfield(E,'timeconstant'))
             if(nlayers ~= length(E.timeconstant))
-                error('Sorry the size of timeconstant must be equal to the size of conductivity');;
+                error('Sorry the length of timeconstant must be equal to the length of conductivity');;
             end
         else
             error('Sorry you must set the timeconstant');;
@@ -38,7 +39,7 @@
         
         if(isfield(E,'frequencydependence'))
             if(nlayers ~= length(E.frequencydependence))
-                error('Sorry the size of frequencydependence must equal to the size of conductivity');;
+                error('Sorry the length of frequencydependence must equal to the length of conductivity');;
             end
         else
             error('Sorry you must set the frequencedependence');;
diff --git a/python/setup.py b/python/setup.py
index 1faa138..8f92a78 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -24,7 +24,7 @@
       package_dir={'gatdaem1d':'gatdaem1d'},
       package_data={'gatdaem1d':['gatdaem1d.so', 'gatdaem1d.dll']},
       scripts=[],
-      version=2.0,
+      version='2.0.1',
       description='Time-domain airborne electromagnetic forward modelling.',
       long_description='Time-domain airborne electromagnetic forward modelling. Python interface to C++ library for forward model and derivative calculations for airborne electromagnetic (AEM) systems used in geophysics.',
       classifiers=[
diff --git a/src/ctlinedata2curtainimage.cpp b/src/ctlinedata2curtainimage.cpp
index 4fc4da4..c1080de 100644
--- a/src/ctlinedata2curtainimage.cpp
+++ b/src/ctlinedata2curtainimage.cpp
@@ -924,11 +924,11 @@ int main(int argc, char** argv)
 		cBlock sb = b.findblock("Section");
 		std::string headerfile;
 		if (ib.getvalue("DfnFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n",headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n",headerfile.c_str());
 			glog.logmsg("Note: in future please use 'HeaderFile = ...' instead of 'DfnFile = ...'\n");
 		}
 		else if (ib.getvalue("HeaderFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n", headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n", headerfile.c_str());
 		}
 		else {
 			glog.logmsg("No Headerfile defined, columns numbers to be used'\n");
@@ -960,7 +960,7 @@ int main(int argc, char** argv)
 			}
 		}
 
-		if (linefieldindex <= 0) {
+		if (linefieldindex < 0) {
 			glog.logmsg("Error: cannot find the line field %s\n",linefieldname.c_str());
 			return 0;
 		}
diff --git a/src/ctlinedata2georefimage.cpp b/src/ctlinedata2georefimage.cpp
index 99b99e6..29c95fc 100644
--- a/src/ctlinedata2georefimage.cpp
+++ b/src/ctlinedata2georefimage.cpp
@@ -569,14 +569,14 @@ int main(int argc, char** argv)
 		cBlock sb = b.findblock("Section");
 		std::string headerfile;
 		if (ib.getvalue("DfnFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n", headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n", headerfile.c_str());
 			glog.logmsg("Note: in future please use 'HeaderFile = ...' instead of 'DfnFile = ...'\n");
 		}
 		else if (ib.getvalue("HeaderFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n", headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n", headerfile.c_str());
 		}
 		else {
-			glog.logmsg("No Headerfile defined, columns numbers to be used'\n");
+			glog.logmsg("No Headerfile defined, columns numbers to be used\n");
 		}
 
 		int linefieldindex = -1;
@@ -605,7 +605,7 @@ int main(int argc, char** argv)
 			}
 		}
 
-		if (linefieldindex <= 0) {
+		if (linefieldindex < 0) {
 			glog.logmsg("Error: cannot find the line field %s\n", linefieldname.c_str());
 			return 0;
 		}
diff --git a/src/ctlinedata2sgrid.cpp b/src/ctlinedata2sgrid.cpp
index e75c4f7..d95b0a5 100644
--- a/src/ctlinedata2sgrid.cpp
+++ b/src/ctlinedata2sgrid.cpp
@@ -469,11 +469,11 @@ int main(int argc, char** argv)
 
 		std::string headerfile;
 		if (ib.getvalue("DfnFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n", headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n", headerfile.c_str());
 			glog.logmsg("Note: in future please use 'HeaderFile = ...' instead of 'DfnFile = ...'\n");
 		}
 		else if (ib.getvalue("HeaderFile", headerfile) == true) {
-			glog.logmsg("Headerfile = %s'\n", headerfile.c_str());
+			glog.logmsg("Headerfile = %s\n", headerfile.c_str());
 		}
 		else {
 			glog.logmsg("No Headerfile defined, columns numbers to be used'\n");
@@ -505,7 +505,7 @@ int main(int argc, char** argv)
 			}
 		}
 
-		if (linefieldindex <= 0) {
+		if (linefieldindex < 0) {
 			glog.logmsg("Error: cannot find the line field %s\n", linefieldname.c_str());
 			return 0;
 		}
diff --git a/src/ctlinedata2slicegrids.cpp b/src/ctlinedata2slicegrids.cpp
index 3ded2d9..93a8534 100644
--- a/src/ctlinedata2slicegrids.cpp
+++ b/src/ctlinedata2slicegrids.cpp
@@ -267,11 +267,11 @@ class cSliceGridder {
 
 		HeaderFile = undefinedvalue<std::string>();
 		if (b.getvalue("DfnFile", HeaderFile) == true) {
-			glog.logmsg("Headerfile = %s'\n", HeaderFile.c_str());
+			glog.logmsg("Headerfile = %s\n", HeaderFile.c_str());
 			glog.logmsg("Note: in future please use 'HeaderFile = ...' instead of 'DfnFile = ...'\n");
 		}
 		else if (b.getvalue("HeaderFile", HeaderFile) == true) {
-			glog.logmsg("Headerfile = %s'\n", HeaderFile.c_str());
+			glog.logmsg("Headerfile = %s\n", HeaderFile.c_str());
 		}
 		else {
 			glog.logmsg("No Headerfile defined, columns numbers to be used'\n");
diff --git a/src/gaaem_version.h b/src/gaaem_version.h
index 44ac2ae..f95e9b6 100644
--- a/src/gaaem_version.h
+++ b/src/gaaem_version.h
@@ -9,6 +9,6 @@ Author: Ross C. Brodie, Geoscience Australia.
 #ifndef _gaaem_version_H
 #define _gaaem_version_H
 
-constexpr auto GAAEM_VERSION = "v2.0.0-Release-20240424";
+constexpr auto GAAEM_VERSION = "v2.0.1-Release-20240619";
 
 #endif
diff --git a/visualstudio/ctlinedata2curtainimage/ctlinedata2curtainimage.sln b/visualstudio/ctlinedata2curtainimage/ctlinedata2curtainimage.sln
index eab60ae..a2ca66d 100644
--- a/visualstudio/ctlinedata2curtainimage/ctlinedata2curtainimage.sln
+++ b/visualstudio/ctlinedata2curtainimage/ctlinedata2curtainimage.sln
@@ -1,9 +1,9 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Express 2013 for Windows Desktop
-VisualStudioVersion = 12.0.31101.0
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34728.123
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ctlinedata2curtainimage", "ctlinedata2curtainimage.vcxproj", "{F2C8E4EA-11EA-4AB5-9D36-624F29CE131D}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ctlinedata2curtainimage", "ctlinedata2curtainimage.vcxproj", "{C63C0B65-EB12-41CF-A77C-C3EE5B3C7560}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -11,10 +11,10 @@ Global
 		Release|x64 = Release|x64
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{F2C8E4EA-11EA-4AB5-9D36-624F29CE131D}.Debug|x64.ActiveCfg = Debug|x64
-		{F2C8E4EA-11EA-4AB5-9D36-624F29CE131D}.Debug|x64.Build.0 = Debug|x64
-		{F2C8E4EA-11EA-4AB5-9D36-624F29CE131D}.Release|x64.ActiveCfg = Release|x64
-		{F2C8E4EA-11EA-4AB5-9D36-624F29CE131D}.Release|x64.Build.0 = Release|x64
+		{C63C0B65-EB12-41CF-A77C-C3EE5B3C7560}.Debug|x64.ActiveCfg = Debug|x64
+		{C63C0B65-EB12-41CF-A77C-C3EE5B3C7560}.Debug|x64.Build.0 = Debug|x64
+		{C63C0B65-EB12-41CF-A77C-C3EE5B3C7560}.Release|x64.ActiveCfg = Release|x64
+		{C63C0B65-EB12-41CF-A77C-C3EE5B3C7560}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE