Show pagesourceOld revisionsBacklinksExport to PDFBack to top Share on ... Twitter LinkedIn Facebook Firefox Troubleshooting Firefox exception breakpoint Try these steps: Refresh Firefox https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings Turn off hardware acceleration https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems?redirectlocale=en-US&redirectslug=Troubleshooting+extensions+and+themes course/firefox/start.txt Last modified: 2017/10/12 13:16by don.lee