[JKT]

OK. If you look back at your crash reporter e-mails to OmniGroup, do they always crash in the same/similar thread? (Check the content of the thread rather than its number).

Did you try Forrest's suggestion - create a new user account and see if it happens there? If it still does, does it still happen in that new user account if you perform a safe log-in (hold the shift key down while clicking the button to log-in and keep it down until the desktop appears). This will clear a number of caches and disable third-party plug-ins etc.