Hi finchton.skateboards,

Sorry to hear you're having issues launching Firefox! You can try launching in Safe Mode if you haven't already.

To do this :

Hold the Shift key and double click on the Firefox Icon. If given the option, click Start in Safe Mode.

See also : Troubleshoot Firefox issues using Safe Mode {link} Firefox keeps crashing at startup {link}

If this isn't possible, there has been issues with another user with a Facebook plugin causing the crash in this thread which has the solution and steps to reporting the crash by contributors : Firefox 63.0.1 crashes during every start / macOS Mojave {link}

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

InstallTime files like InstallTime20190813150448 are log files that are created when you update Firefox. They have nothing to do with crashes.

Thanks for your replies. The issue with obtaining the crash reports is that Firefox won't even launch. When clicking on the app icon nothing happens. In the meantime, I'll try in Safe Mode & will see how it goes.

Just tried in Safe Mode & the problem persists, app won't launch.

If you can't start Firefox, see: How to get the crash ID if Firefox crashes on startup

• https://developer.mozilla.org/en-US/How_to_get_a_stacktrace_for_a_bug_report

OK, I deleted a bunch of Mozilla Preference & cache files + reinstalled the app & it works perfectly now. Thanks for your help.

That was very good work. Well done. Please flag your last post as Solved Problem as this could help others with similar problems.