http://bugs.winehq.org/show_bug.cgi?id=27131
--- Comment #2 from Nikolay Sivov bunglehead@gmail.com 2011-05-11 11:33:52 CDT --- Backtrace lacks symbol info, please install wine's debug symbols (easiest way is to build wine from sources).
After that please attach +richedit,+tid log as a text file.