Firefox will not open. I have tried to uninstall and this wont work. I have laded beta version but I still can't uninstall earlier version. I would prefer the earlier version working. I have tried to update this version and that wont work either

I can't open firefox. I have tried to update, repair and uninstall and nothing works. I have checked that it is not already running. I have restored my pc to an earlier date, completed scans but it will still not work. I have loaded the beta version ok but I am not keen on it and would prefer the earlier version.
Can you help please

http://www.oldversion.com/Mozilla-Firefox.html
Got to this site and there you can find older versions of firefox
Vet

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