PME 7.50 crashes on Windows 7

I am using PME 7.50 Sim 5 on a Windows 7 PC and it will intermittently crash.

I am also using PME 7.50 Sim 5 on a Windows XP PC and it works fine.

Our Systems Administrator says that I have full administrative rights on the Windows 7 PC, but I'm not quite sure that is correct and right now I believe that may be the issue.

Has anyone experience this problem? Any insight would be much appreciated.

Thanks