Bug - Unhandled exception at the game details screen
Before actually joining a server at the live browser, you can double click it to view more information at the Game Details screen. If I press "tab" while on this screen the game will crash. If key assignment has anything to do with it, tab is my switch weapon. I'ts likely something more related to viewing the post-game statistics in the pre-game lobby, where you press tab to bring them up.