http://bugs.winehq.org/show_bug.cgi?id=10462
--- Comment #11 from Dan Kegel dank@kegel.com 2007-11-16 10:29:38 --- Sadly, the new logs aren't any better; the backtraces still don't have wine source file names and line numbers. You may have to build your own wine to get those.
The demo problem, since it's different, deserves a new bug report. Can you file one? Don't forget the keywords download, installer
Thanks!