That could be a problem with Trusteer software (RapportTanzanxx.DLL). Make sure that you have the latest updates of your Trusteer software. You can try to contact Trusteer for support. *http://www.trusteer.com/support/rapport-installation-links *http://www.trusteer.com/support/report-problem *http://www.trusteer.com/support/submit-ticket Try to update or uninstall and reinstall Trusteer Rapport and if that doesn't help then disable/stop the program for now. *Start Menu > Programs > Trusteer Rapport > Stop Rapport Mac:System Preferences -> Other -> Rapport -> Stop Rapport *http://kb.mozillazine.org/Firefox_crashes#Trusteer_Rapport ---- *[https://bugzilla.mozilla.org/show_bug.cgi?id=1159484 bug 1159484] - Firefox 37.0.2 crashes with Trusteer Rapport

Thanks a lot!!