After working for a period of time, my macro's don't run correctly anymore. The UserForm shows up when I Start Debugging, but the buttons don't show any behavior anymore.

What I have tried:

- reinstalled SolidWorks several times

- View > Toolbars > Customize... > Toolbars > Reset...

- Insert > Components... > Microsoft Windows Common Controls 6.0  (MSCOMCTL.OCX)

I am using Windows 7 Enterprise 32-bit, SolidWorks 2009 SP0.0 (but SW 2010 gives the same problem), Visual Basic 6.0