I ran a full anti-virus and all of that including a full spyware scan and nothing showed up.
I am using 6.3, but before we even had problems 6.4 and it still crashed. So what we did was we re-installed Gamestudio and only got it up to 6.3.
The project isn't very large:
599 Objects, 243 portals, the level size is 6400 units, 7996 vertices, 7470 visible surfaces, 5 textures, texture space is 722 Kb, 89 regions.
It is being run on a desktop computer not a laptop.
It crashes in MED, and WED.