hello, can you try to replicate this behaviour when you launch firefox in safe mode once by pressing the shift key while firefox is starting? if not, maybe an addon is interfering here...

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

Hello, Thank you for replying. I'm sorry but I'm not sure what you mean by replicating the behavior in Safe Mode and pressing the shift key. I did start FF in Safe Mode and pressed Shift and FF opened. Is there any data I need to send you?

if firefox crashes when you open it normally but you can get it to open successfully when launching it in safemode, it's likely that one of your installed extensions is causing the issue! please work yourself through the steps mentioned under "The problem does not occur in Safe Mode" in the article i've linked to before...

I think I narrowed it down to being the Swagbucks button extension. I haven't had any issues since I disabled it yesterday. Thanks for your help!