Upgrading Firefox, i mistakenly moved my old profile to my desktop to save it in case something went wrong. When trying to put it back where i stole it from, i forgot which file it came from and went to where i thought it came from and found a new profile existed there. Error message says two browsers can not be open at the same time. Can't turn off the FFX browser because it won't display as open. i have trashed everything labled Firefox using apple command find and then attempted to install a new downloaded copy. Still gets same message as if the newly downloaded copy is already running.