http://bugs.winehq.org/show_bug.cgi?id=31177
--- Comment #2 from Ian ifreecarve@gmail.com 2012-07-09 12:08:25 CDT --- So far this particular crash only happened once, and the windows app itself seems to be in rough shape given the number of files it's trying to upload on its initial sync -- it silently crashes on its own.
I will post more info as I test more.