http://bugs.winehq.org/show_bug.cgi?id=27963
--- Comment #8 from Roland Haeder roland@mxchange.org 2013-07-17 18:09:51 CDT --- As an alternative, the troubling DLL can be disabled with winecfg. Here you may want to try to disable "PCTouchHelper.dll":
1) Start winecfg (with the correct WINEPREFIX value) 2) Click on Libraries 3) Enter pctouchhelper -> click "Add" 4) Click "Edit" -> Select "Disabled" 5) Click "OK" button to apply and close winecfg 6) Launch Steam + game, the crash should be gone
Plus there is a native Linux version avaiable which is currently freeze on some non-Ubuntu systems (they only support Ubuntu) while loading missions.