diff --git a/vistrails/packages/vtk/vtk_parser.py b/vistrails/packages/vtk/vtk_parser.py
index 7724d1e68..9b1c133cb 100644
--- a/vistrails/packages/vtk/vtk_parser.py
+++ b/vistrails/packages/vtk/vtk_parser.py
@@ -363,7 +363,10 @@ def _organize_methods(self, klass, methods):
         meths = self._find_state_methods(klass, meths)
         meths = self._find_get_set_methods(klass, meths)
         meths = self._find_get_methods(klass, meths)
-        self.other_meths = [x for x in meths if '__' not in x]
+        self.other_meths = [x for x in meths \
+                            if callable(getattr(klass, x)) and
+                                '__' not in x and
+                                not isinstance(getattr(klass, x), type)]
 
     def _remove_method(self, meths, method):
         try: