http://bugs.winehq.org/show_bug.cgi?id=25728
--- Comment #16 from Andrew Eikum aeikum@codeweavers.com 2012-04-17 12:53:32 CDT --- No, let's stick with this bug until the crashes are fixed. We can see where we're at after that.
Unfortunately that log doesn't show the crash. How about another log with the same channels and also +seh,+msgbox,+dialog. Just get to the crash as quickly as possible and post the log.
By the way, does the dialog look like a standard Wine message box, or is it more application-specific?