I am having the same problem. It just started the other day which is very odd..

I have WAYYYYY more than enough power to run this game. P4 3.2 ghz, 2gigs of PC3200 DDR400 RAM, SATA II HD, and a X800 Video card with 256 megs of ram.

This isn't a incompatibilty issue.. something else is up, and it's driving me mad!!! It worked just fine the other day.. nothing has changed to the system since then!

ARGF!