LOL, Hack.
BTW.. I haven't tried MP yet but SP loaded and ran without issue this morning in Vista 64 SP1/NVidia 8800GTX 768/X-Fi.. everything I've read points a finger at any one of those things for causing problems.
I've still got a frame-rate tweaking to do.. but so far so good, don't jinx it..
Edit - Just ran a quick run at MP.. No probs..