i just downloaded it and installed it yesterday, and i haven't been able to play the new zombie map. every time it loads, it gets about a quarter of the way through and just crashes to the desktop. no error message, nothing. and when i try to get back into the game, it gives me an error saying that it failed to close properly and asks me if i want to start the game in safe mode. i've tried loading the map like that, but it does the same thing. what the crap is going on?!