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stopped working

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my Firefox was working just fine, and I did an update this morning and now nothing works. My Firefox will not install and nothing that works with Firefox will work. I tried to uninstall the Firefox that I had and it doesn't even show up on the list of programs any more, so I can't do an uninstall.

my Firefox was working just fine, and I did an update this morning and now nothing works. My Firefox will not install and nothing that works with Firefox will work. I tried to uninstall the Firefox that I had and it doesn't even show up on the list of programs any more, so I can't do an uninstall.

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