I am experiencing a consistent crash on the base assault that requires the skeleton key. It has happened twice now. I am using an Alloy SHIV to suppress one of those two Floaters along the south eastern corridor. When I choose to move my next character (either one seemed to cause it) the game crashes. I have played quite a bit of the game so far without any crashes so this is a surprise to me. I am running on Windows 7 with a GTX750Ti.