Ok I have sucessfully executed the commands with no adverse effects. I would suspect you do not have all of the VBA type libraries installed. Since the code is a compiled VLX we cannot look at it to determine the reason it won't work, we can only speculate. Since some Express tools also don't work, I think that if you reinstalled the VBA components it should fix the problem. What you need to realize is that the module likely uses ActiveX VisualLisp commands that require the VBA Type libraries. If you are missing a specific one, then the commands that require that library will not work.