--- a/DataTypeEditor.py	Sat Mar 31 15:03:50 2012 +0200
+++ b/DataTypeEditor.py	Sat Mar 31 15:08:18 2012 +0200
@@ -712,6 +712,7 @@
 ##                type_menu.AppendMenu(wx.NewId(), _("Function Block Types"), functionblock_menu)
             rect = self.StructureElementsGrid.BlockToDeviceRect((row, col), (row, col))
             self.StructureElementsGrid.PopupMenuXY(type_menu, rect.x + rect.width, rect.y + self.StructureElementsGrid.GetColLabelSize())
+            type_menu.Destroy()
             event.Veto()
         else:
             event.Skip()