solidworks stops working after update

It seems that I can update all products (Cosmos, eDrawings,etc.)except SolidWorks. Every time I have tried to updateSolidworksfrom 2007 SP0.0 (cd/dvd purchased version) to any otherservicepack Solidworks stops working. The install works without anyerrorsbut, when I try and start Solidworks the program opens,pauses fora second and then closes. I've tried using the diagnosticprogramand it states that nothing is wrong. The only way to gettheprogram Solidworks working again is to uninstall everythingandstart over with a fresh install.

Has anyone else experienced this or have any idea as to whattheissue may be.

Thanks,
Eric SolidworksGeneral