i keep gettin the engine.exe error after about 15 mins of gameplay, then it just seems to happen randomly after that. ive got 1.5 patch and all upto date drivers, p4 3.2ghz processor, 1024mb Ram, GeForce 7800gtx gfx card and 120mb Harddrive. Yet it still seems to do it all the time. not sure on the problem any help would be appreciated.