Windows 2000

I am trying to run VB 6.0 in Windows 2000 and when I open an existing program VB crashes. I can create a new program but, when I bring in an existing form or control VB crashes.
I have fixpack 3.0 install on Visual Basic. Any help will be appreciated
Thanks,

Joe

I now have update 4 installed. I can load projects that have been created from other sources. The only ones I can't load are the ones I created on old my Windows NT Workstation.
Thanks