See:

• http://kb.mozillazine.org/Installing_Firefox#Mac_OS_X
• https://support.mozilla.com/kb/Installing+Firefox+on+Mac

Make sure that Firefox gets installed properly.
Open the Firefox disk image (DMG) file with a double-click if necessary and drag the Firefox program to the application folder on your hard drive.
You shouldn't double-click the Firefox application to run it from the disk image, but drag it out of the DMG folder instead.

I have done all these things and still I get the same problem. Would it help if I uninstalled it ?

Yes, you can do that, but make sure to trash the current Firefox installation before installing 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.

• http://kb.mozillazine.org/Profile_folder_-_Firefox

Hello Thanks so much for trying to solve this problem. I have done as you directed and now have the new version of Firefox running . It is a bit unconventional since i still get that box on my desktop but when I click on the icon Firefox 8 pops up. Thanks Derek

You're welcome

I think perhaps you are not installing Firefox correctly.

• http://support.mozilla.com/kb/Installing+Firefox+on+Mac