I try to update firefox on my MacBook. When I slide the icon to my applications folder it tells me cannot install and some items had to be skipped.
After I download. I slide the FF icon to the applications folder. I enter my password, and then it tells me that that it could not update and some items had to be skipped. I checked finder and unlocked the items and it still gave me the same error. I am using OSX Lion.
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Is Firefox running when you try to do that? You have to exit Firefox before you can replace it.
No, firefox is not running
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 15.0.x: http://www.mozilla.org/en-US/firefox/all.html
- Trash the current Firefox application (e.g. open the Applications folder in the Finder and drag the Firefox application to the Trash) to do a clean (re-)install
- Install the new version that you have downloaded
- https://support.mozilla.org/kb/Installing+Firefox+on+Mac
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.