http://bugs.winehq.org/show_bug.cgi?id=23899
--- Comment #2 from t6tiar00 t6tiar00@students.oamk.fi 2010-09-29 04:36:28 CDT --- (In reply to comment #1)
Please check that the FAQ at http://wiki.winehq.org/FAQ#head-34c8b5d78823a60c9651b4c9848c06a1aa8fea48 ("I deleted my Wine menu, and now I can't get it back.") does not apply to you.
Terminal output probably isn't useful anyway, if Wine is creating .desktop files and folders. Probably gnome doesn't like something about the generated files.
I checked that and it didn't apply to me. There was no entries in those files.