Hmm, that is odd. You can try to update your drivers to the newest one, or you could check if it happens with other games or not (to see if it's a problem with my game or some problem related with your PC), but without a log it is difficult to pinpoint the problem exactly.
If I'm not mistaken, you can find the logs at: "c:\Users\YourUserHere\AppData\Local\Changed3D\Saved\Logs\"
It's really late here, so I will check this tomorrow or on Monday.
