I can't open my Mac OS Firefox upgrade because it says the "developer can't be identified"???

PLEASE FIX THIS ASAP!

Try installing from a complete installer rather than updating. You can get the latest version here:
https://www.mozilla.org/en-US/firefox/all/

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Do a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 19.0.x: http://www.mozilla.org/en-US/firefox/all.html
Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
*Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

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It’s part of the basic install of OS X. So unless you deleted it then it’s there in your apps folder. If you have deleted it, it’s on the System Restore disks that came with your Mac. You will be able to extract the installation package using Pacifist.
Alternatively, if you’re using almost any camera +apart from a Canon+ then the camera card is visible on the desktop and you can drag the movie to the desktop using the Finder and import from there.
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Why use a Card Reader?
Because it’s safer: Less risk of your images being lost if your camera shuts down during transfer.
Because it saves the battery on your camera
Because it saves wear and tear on your camera ports
Because it’s almost always faster.
Regards
TD

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If you're using a fifth generation iPod touch and a PowerPC Mac, buy a newer computer.
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Hello,
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Install more RAM in the computer; the Mac needs to have at least 2GB of RAM and should have 4GB or more first.
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http://docs.info.apple.com/article.html?artnum=93061
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And by the way I tried this one
http://discussions.apple.com/message.jspa?messageID=3577004#3577004
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I can't open my Mac OS Firefox upgrade because it says the "developer can't be identified"???

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