Nick, sorry to hear about that. I'm not sure where you are sending the emails, but if you use the form to submit your crash information, that goes into a database for review by the developers instead of coming to the support volunteers here.

Did you try the History > Restore Previous Session command? Firefox sometimes saves form data in the session history. This data may age out, so you should use that menu item as soon as possible.

Going forward, consider installing the Lazarus: Form Recovery extension if you are filling long forms and Firefox is unstable.

With respect to the crashes, there are many possible reasons for Firefox to crash. Have you reviewed the help articles for diagnosis? For example: Troubleshoot Firefox crashes (closing or quitting unexpectedly).

Also, try saving the older session file here:

Help > Troubleshooting Information > "Show Folder" button

Look for sessionstore.bak and make a copy in a safe place.

Note that Firefox copies the sessionstore.js to sessionstore.bak at the start of a new session to make it possible to restore the previous session at any time during the current session, so if you have restarted Firefox more than once then sessionstore.bak has already been replaced.

• http://kb.mozillazine.org/sessionstore.js

If you have submitted crash reports then please post the IDs of one or more crash reports that have this format:

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

You can find the IDs of the submitted crash reports on the about:crashes page.

• You can open the about:crashes page via the location bar, like you open a website.

See:

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