http://bugs.winehq.org/show_bug.cgi?id=26414
--- Comment #9 from André H. nerv@dawncrow.de 2011-03-16 13:58:43 CDT --- you may want to read http://wiki.winehq.org/Developers but basically you can turn on traces of specific dlls/files with WINEDEBUG. e.g. WINEDEBUG=wininet wine app.exe and of course you can add your on to your local codebase to see more.
As it crashes in wow you we can't see why here. But if you use the relay debug channel you see nearly every important call and if you read through it you normally see why an app crashes that bad way