hi, thanks for providing a crash id - unfortunately this crash may be caused by websense endpoint security software that is running on a device. websense has released an updated version (8.1.2224) which may address the issue. in case your computer is part of a managed enterprise environment, please get in contact with your it department about this issue. more information is available in [https://bugzilla.mozilla.org/show_bug.cgi?id=1181091 bug 1181091].