http://bugs.winehq.org/show_bug.cgi?id=9983
--- Comment #15 from JamesT infinite1der@gmail.com 2007-10-18 09:04:45 --- (In reply to comment #14)
(In reply to comment #13) What exactly did you run? If you run "hl2.exe" directly, then it's invalid. You should start all steam games via steam GUI or using "-applaunch" command line option.
WINEDEBUG="warn+all,fixme-all" wine C:\Program\ Files\Steam\Steam.exe
I get the error when launching any game from within Steam.