I just install Ubuntu Mate on a Raspberry Pi Model B and after the initial login I could start Firefox. After a shutdown and startup when I try and start Firefox it goes straight to a crash report. I renamed .mozilla and the same thing happens. The system is fully patched and it looks like version 64 of Firefox on Ubuntu Mate 16.04.
I have done a search and it talks about editing a file in ~/.mozilla/firefox/’’/prefs.js which doesn’t seem to exist, I know that "" means the *.default directory.
I’m not sure what to ask except is there a working browser for this version of Ubuntu Mate? Looks like it has been a long term problem.