Star has stopped working error?

Hi guys. I am running SW 2010 / sim 2010. I had it on a 32 bit windows 7 system forever, with an old AMD processor etc, and it ran fine- slow- but fine. That box recently died, so I built myself a new pc- 64 bit windows 7, core i7, 16gb ram, etc... Now I get this error when I run simulation:

"Star has stopped working" and then it says simulation failed and kicks me out.

I have tried old studies that worked fine on the 32 bit system, and they do the same thing. I did a little bit of googling, but did not come up with much...

Anybody seen this?

Thx,

Pete    

SolidworksSimulation