The report shows that the Flash plugin crashed. Did Firefox crash completely after that? Was any second crash report captured? Curiously, the report is for Firefox 28.0, but the forum identified your current version as Firefox Beta (future Firefox 30.0). Did you switch versions after the crash and, if so, do you have any newer crash reports? Or is that from a different computer/different Firefox? ---- If you haven't already, could you try disabling the Flash plugin's protected mode feature? This involves creating or editing a settings file. The following pages/posts provide different ways to do that: * Adobe support article under the heading "Last Resort": [http://forums.adobe.com/message/4468493#TemporaryWorkaround Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?] * Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209 * Batch file to automate the manual steps: https://support.mozilla.org/questions/982093#answer-518078 Flash needs to completely unload from memory (restarting Firefox might help) before this would take effect.