If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:

• bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the Report ID of recent crash reports on the "Help > Troubleshooting Information" page (about:support).

• Click the "All Crash Reports" button on this page to open the about:crashes page and see all crash reports.

If necessary then you can open about: pages via the location/address bar.

See:

• http://kb.mozillazine.org/Mozilla_Crash_Reporter
• https://support.mozilla.org/kb/Mozilla+Crash+Reporter

If the "bp-" prefix is missing then click its line on the about:crashes page to submit the crash report and the crash report will get a "bp-" prefix (do not add it yourself).

There are no crash reports. Basically what happens is that the screen freezes up and I have to manually close the program when the gmail issues occur.

Same issue here: https://support.mozilla.org/de/questions/1041282