I can't say for sure, but it looks like a couple of DLL's haven't been updated
Have you already identified servers and clients and repaired them via Steam?
You can also post the log file here
Thanks for the reply! I'm not sure I understand what I'd be looking at for those but I can give some googling a shot and get back to you:) I'm really hoping it's only a steam issue. Unless you're talking about verifying game files then I have done that a few times with each game.
UPDATE: I cleared my steam download cache, relaunched steam, re-installed the game, and so far I've been able to play about 30 minutes and no crash yet. We might be good! Thanks for the help noci I'll check back in here again if something is wrong. I had tried re-installing previously with no luck but it seems to have worked this time.