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I installed Firefox 18 but it doesnt open or function

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Firefox 18 is installed and it doesn't nor function. I uninstalled it and reinstalled it but no luck. When I try to open firefox 18 a message comes up which says"A copy ofirefox is already open. Only one copy of Firefox can be open at one time." I uninstalled every copy of Firefox But nothing works. I cannot reset fire fox as it does not open.

Firefox 18 is installed and it doesn't nor function. I uninstalled it and reinstalled it but no luck. When I try to open firefox 18 a message comes up which says"A copy ofirefox is already open. Only one copy of Firefox can be open at one time." I uninstalled every copy of Firefox But nothing works. I cannot reset fire fox as it does not open.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1

More Information

cor-el
  • Top 10 Contributor
  • Moderator
12136 solutions 112749 answers
See: *https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding *http://kb.mozillazine.org/Profile_in_use Try to delete the profiles.ini file to force Firefox to create a new default profile. *http://kb.mozillazine.org/profiles.ini_file *https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile