[BUG] crash to desktop 4 times in a row, no error message

Not been online for a few months, attempted to launch icestorm: expedition and it crashed to desktop with no error message or warning, from a black loading screen. My equipment is marked as dropped, so I have no way of getting it back. checked the integrity of the steam files, check out ok, never had this problem previously. 2 more attempts, same problem

Also tried joining a friend's game, which was run through G-Force now, which she was able to launch successfully, but the exact same thing happened.

I now have 2 sets of equipment dropped into missions I can't access, and no way of playing the game.

help plz?