http://bugs.winehq.org/show_bug.cgi?id=17395
--- Comment #6 from Vitaliy Margolen vitaliy@kievinfo.com 2009-02-16 11:02:43 --- It really looks to me that you somehow corrupted the steam instal and/or data files.
- Please remove / rename the ~/.wine directory - Install Steam (following HOWTO on AppDB) - Copy "Program Files/Steam/steamapps" directory from windows. Make sure to properly set permissions (644 on files and 755 on directories) and ownership