http://bugs.winehq.org/show_bug.cgi?id=26835
--- Comment #45 from koolfy koolfy@gmail.com 2011-04-19 17:03:30 CDT --- (In reply to comment #43)
According to the SPUF thread this is caused by non-NTFS file systems http://forums.steampowered.com/forums/showpost.php?p=21923567&postcount=... and valve are looking into it http://forums.steampowered.com/forums/showpost.php?p=21944181&postcount=...
This is not the error we get at the splashscreen crash (as in "we don't get any."), it may be a problem we might face after the splashscreen, but we've not figured out yet how to get to the menu itself.