Issue : EXCEPTION_ACCESS_VIOLATION_READ

Some adapter issues, Update your Video Card Drivers would help.

Do you have any Av programs as a plugin ? Websense maybe if so disable it.

Issue : ver 52

Please update to 52.5.0 ESR. It will continue to get security updates until May 2018, and you can download and install it from this page: https://www.mozilla.org/en-US/firefox/organizations/all/ Note : Legacy Extensions will be deleted or removed in any version update after May 2018.

You should make a backup of your Profile before going back and just because: https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Please let us know if this solved your issue or if need further assistance.

the crash is caused by websense security software on your system. please see if there are any updates available for it. firefox since version 53 would have mitigations against this crash.