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I installed 3.6.12 and now get error message that says - Error: Platform version 1.9.2.12 is not compatible with miniversion >= 1.9.2.10 maxversion <= 1.9.2.19 and it won't launch unless outside of sandbox. I cannot navigate to yahoo. Please help.

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I down loaded latest version and get error message when I launch it. Error message is entitled XUL Runner and says - Error: Platform version 1.9.2.12 is not compatible with miniversion >= 1.9.2.10 maxversion <= 1.9.2.19 and it won't launch. I can launch if I use Run Outside of Sandbox option, but I cannot navigate my home page on yahoo. What happened? Please send fix. Thanks, Irrawady2002@yahoo.com.

I down loaded latest version and get error message when I launch it. Error message is entitled XUL Runner and says - Error: Platform version 1.9.2.12 is not compatible with miniversion >= 1.9.2.10 maxversion <= 1.9.2.19 and it won't launch. I can launch if I use Run Outside of Sandbox option, but I cannot navigate my home page on yahoo. What happened? Please send fix. Thanks, Irrawady2002@yahoo.com.

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Do a clean (re)install:

  • Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
  • Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
  • Don't remove personal data when uninstalling.
  • 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.

Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.