http://bugs.winehq.org/show_bug.cgi?id=15455
--- Comment #4 from lyxdesic michael_masterson@att.net 2008-09-30 01:59:55 --- (In reply to comment #3)
Well, this is no real fix but try installing the windows version of mono. See: http://www.mono-project.com/Main_Page
I've installed mono19 from winetricks; tried both before and after installation of the Witcher. The problem with the hang is that the hang at the end keeps the Witcher from recognizing in wine as installed