http://bugs.winehq.org/show_bug.cgi?id=25206
--- Comment #37 from Janne Hakonen joyer83@live.fi 2011-01-06 14:11:01 CST --- I think I found a way to stop the crash with AwesomiumProcess.exe when you open Item Store.
Open dlls/ntll/signal_i386.c. Look for RtlCaptureStackBackTrace function, it's on line 2421 (at least with Wine version 1.3.10). Remove the function's content and replace it with: return 0;
Does this work for you?