--- a/plugins/c_ext/CFileEditor.py	Fri Jun 24 01:17:07 2011 +0200
+++ b/plugins/c_ext/CFileEditor.py	Wed Sep 07 16:01:13 2011 +0200
@@ -740,7 +740,7 @@
                 self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(base_type), id=new_id)
             type_menu.AppendMenu(wx.NewId(), "Base Types", base_menu)
             datatype_menu = wx.Menu(title='')
-            for datatype in self.Controler.GetDataTypes(basetypes = False):
+            for datatype in self.Controler.GetDataTypes(basetypes=False, only_locatables=True):
                 new_id = wx.NewId()
                 AppendMenu(datatype_menu, help='', id=new_id, kind=wx.ITEM_NORMAL, text=datatype)
                 self.Bind(wx.EVT_MENU, self.GetVariableTypeFunction(datatype), id=new_id)

--- a/plugins/c_ext/c_ext.py	Fri Jun 24 01:17:07 2011 +0200
+++ b/plugins/c_ext/c_ext.py	Wed Sep 07 16:01:13 2011 +0200
@@ -139,11 +139,11 @@
     def GetBaseTypes(self):
         return self.GetPlugRoot().GetBaseTypes()
 
-    def GetDataTypes(self, basetypes = False):
-        return self.GetPlugRoot().GetDataTypes(basetypes = basetypes)
+    def GetDataTypes(self, basetypes = False, only_locatables = False):
+        return self.GetPlugRoot().GetDataTypes(basetypes=basetypes, only_locatables=only_locatables)
 
     def GetSizeOfType(self, type):
-        return TYPECONVERSION[self.GetPlugRoot().GetBaseType(type)]
+        return TYPECONVERSION.get(self.GetPlugRoot().GetBaseType(type), None)
 
     def SetVariables(self, variables):
         self.CFile.variables.setvariable([])
@@ -169,17 +169,21 @@
         input = memory = output = 0
         for var in self.CFile.variables.getvariable():
             var_size = self.GetSizeOfType(var.gettype())
+            var_location = ""
             if var.getclass() == "input":
                 var_class = LOCATION_VAR_INPUT
-                var_location = "%%I%s%s.%d"%(var_size, current_location, input)
+                if var_size is not None:
+                    var_location = "%%I%s%s.%d"%(var_size, current_location, input)
                 input += 1
             elif var.getclass() == "memory":
                 var_class = LOCATION_VAR_INPUT
-                var_location = "%%M%s%s.%d"%(var_size, current_location, memory)
+                if var_size is not None:
+                    var_location = "%%M%s%s.%d"%(var_size, current_location, memory)
                 memory += 1
             else:
                 var_class = LOCATION_VAR_OUTPUT
-                var_location = "%%Q%s%s.%d"%(var_size, current_location, output)
+                if var_size is not None:
+                    var_location = "%%Q%s%s.%d"%(var_size, current_location, output)
                 output += 1
             vars.append({"name": var.getname(),
                          "type": var_class,