Could you post the link to the report on the crash-stats server? On your about:crashes page, you can click the report ID to get to that page. ---- This is some standard guidance that addresses the most common issues with the Flash Player plugin. I'm sure you've seen some of it before, but just in case: (1) If you have any recorders/downloaders that interact with Flash media make sure they are as up-to-date as possible, or disable them temporarily. (2) Disable hardware acceleration in Firefox and in Flash (A) In Firefox, un-check the box here: "3-bar" menu button (or Tools menu) > Options > Advanced > General > "Use hardware acceleration when available" That takes effect the next time you exit and start Firefox up again. (B) In Flash, right-click the media and choose Settings, then the first mini-tab and uncheck the box to use hardware acceleration. More information in this support article from Adobe: http://helpx.adobe.com/flash-player/kb/video-playback-issues.html#main_Solve_video_playback_issues (3) Disable protected mode (Windows Vista and higher) The protected mode feature of the Flash player plugin has security benefits, but seems to have compatibility issues on some systems. There is a new hidden setting for this: (A) In a new tab, type or paste '''about:config''' in the address bar and press Enter. Click the button promising to be careful. (B) In the search box above the list, type or paste '''flash''' and pause while the list is filtered (C) Double-click the '''dom.ipc.plugins.flash.disable-protected-mode''' preference to switch its value from false to true. This might not take effect until all Flash has been unloaded for a few minutes, or you close Firefox. Before that preference was added, the way to disable protected mode was by creating or editing a settings file. The following pages/posts provide different approaches for that if it turns out to be necessary (if Flash EXE processes continue to show up in the Windows Task Manager, Processes tab, even after changing the Firefox preference): * 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 (alternate version of Carm's batch file with a few changes by me: [https://onedrive.live.com/?cid=f7d304d92388737d&id=F7D304D92388737D!336&ithint=file,.bat&authkey=!AP2FXW2Y_3BXZyo]) Flash needs to completely unload from memory (exiting and starting Firefox up again might help) before this takes effect. Any improvement?

That is a hang in the Shockwave Flash plugin. *bp-cf176d44-2177-47ea-8044-75aa32150428 Firefox 37.0.2 Crash Report [@ hang | libsystem_kernel.dylib@0x177b6 ] It is a crash on a Mac computer (OS X 10.10). Did you use a Windows computer to post this question?