
6.3 Firefox does not start when System Mechanic is installed.6.4 Application fails to start because js3250.dll or other program files are missing.6.5 "Error opening file for writing." on Vista.8.1 Firefox won't run on Mac OS X when home folder is on a network share.8.2 Unable to reopen Firefox on Mac OS X after installing and closing it.8.3 Firefox 4 or above does not start on Mac OS X 10.4 or PPC Mac OS X 10.5.8.4 Firefox 3 does not start on Mac OS X 10.3.9 or below.Only one copy of Firefox can be open at a time." To open a new window, you must first close the existing Firefox process, or restart your system." "Firefox is already running, but is not responding.Close Firefox or Close SeaMonkey message box with one of these messages (using Firefox as an example).Profile in Use: The Profile Manager appears along with a message that the selected profile is already "in use" when you attempt to start your Mozilla browser.One of the following messages can appear when you start your Mozilla browser if the profile is either "locked" or inaccessible: #Hp windows 10 mozilla firefox not responding mac os x#

In the above examples, ending the browser process or restarting the system will normally unlock the profile. Your Firefox profile cannot be loaded.If not, see the Profile in use article for further instructions. (or similar SeaMonkey message): This message appears when the profile folder referenced in the profiles.ini file cannot be located. See the Profile cannot be loaded article for more information.

