http://bugs.winehq.org/show_bug.cgi?id=21302
--- Comment #2 from Jeff Zaroyko jeffz@jeffz.name 2010-01-09 21:39:09 --- If you follow http://wiki.winehq.org/Backtraces it says to use set $BreakOnFirstChance=0'
See if that gives a different backtrace with winedbg.
Also, please include a link to the download if one is available and add the download keyword.