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A copy of Firefox is already open. Only one copy of Firefox can be open at a time -- HOW DO I SOLVE THIS?

Posted

I have read the other threads and tried what they suggested and am still unable to solve this.

I am using OSX 10.7.5

I have tried uninstalling and reinstalling firefox. This did not work.

Any suggestions?

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/536.26.14 (KHTML, like Gecko) Version/6.0.1 Safari/536.26.14

More Information

cor-el
  • Top 10 Contributor
  • Moderator
10755 solutions 96800 answers

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from your old profile (if there is one) to that new profile, but be careful not to copy corrupted files.

See: