[Bug 26835] Portal 2 exits at menu screen.

http://bugs.winehq.org/show_bug.cgi?id=26835

--- Comment #38 from ntan1  2011-04-19 14:25:37 CDT ---
It seems like the biggest issue for getting portal 2 to truly be playable (with
workarounds) is the communication component between client.dll and server.dll.

It seems that Portal 2 queries some Steam server (or maybe your instance of
Steam) to do verification of your game instance, and a failure in said
verification is causing the crash. I suspect GameOverlayRenderer is somewhat
related, and there have been issues with client-steam server communication in
the past (check other games that force authentication with Steam).