What does "item XUL is in use" mean and how do I turn it off?
It trying to install upgrade, I am asked to replace older item with newer one and I click Replace. Then I get a message "The operations can't be completed because the item "XUL" is in use. What does that mean and how do I proceed?
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If there are problems with updating or with the permissions then easiest is to download the full version and trash the currently installed version to do a clean install of the new version.
Download a new copy of the Firefox program and save the disk image (dmg) file to the desktop
- Firefox 8.0.x: http://www.mozilla.com/en-US/firefox/all.html
- Trash the current Firefox application to do a clean (re-)install
- Install the new version that you have downloaded
Your profile data is stored elsewhere in the Firefox Profile Folder, so you won't lose your bookmarks and other personal data if you uninstall and (re)install Firefox.
I can't trash firefox because I get a message saying that a copy is open. I can't find the open copy. I can't trash firefox.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!