Just had another crash, seems to happen in more hectic situations (not necessarily with a lot of bots).
“Solved” my problem by uninstalling, removing user files from my documents and reinstalling. Does keep crashing though every second game or so, on Windows 7 64bit.
Actually, it does seem to be the brightness as I can see very very faintly the surroudings when I start to play a match again.
Same problem occurs here. It crashed during a match and since then I don’t get graphics any more. I’ve fiddled with some video settings but nothing seems to help.