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I am trying to install an extension that requires FF 4.0. I downloaded 4.0 yet the extentsion says I still have 3.6.16 when trying to install.

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  • 17 have this problem
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  • Last reply by cor-el

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I have uninstalled and reinstalled FF several times. When I try to install the extension (that requires FF 4.0), I get a pop-up that says I am still using an older version of FF and asks if I want to upgrade. When I click on "About Firefox", it says I have 4.0. In February, I downloaded FF Beta which I understand could be a problem. I also have read that you need to manually delete Beta files which I have done. I did a system search to see if any Beta files exist and no further files were found. I just want to make sure FF 4.0 is installed and be able to install the FGS extension.

I have uninstalled and reinstalled FF several times. When I try to install the extension (that requires FF 4.0), I get a pop-up that says I am still using an older version of FF and asks if I want to upgrade. When I click on "About Firefox", it says I have 4.0. In February, I downloaded FF Beta which I understand could be a problem. I also have read that you need to manually delete Beta files which I have done. I did a system search to see if any Beta files exist and no further files were found. I just want to make sure FF 4.0 is installed and be able to install the FGS extension.

Chosen solution

Sorry about the error in the link. Looks like that older spelling that I still had with "Web sites" instead of "Websites" no longer work. I've corrected it.

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You have a corrupted user agent that identifies you as Firefox/3.6.16

  • Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16 FBSMTWB

See:

Modified by cor-el

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Thank you, cor-el, for your reply. I clicked on the link you provided, and it took me to Create a New Article. I'm assuming an article already exists for this. Can you instruct me on how to view this article. This is the first time I have ever had to refer to Mozilla Help. I have tried to do this on my own, but am having difficulty. Thanks for your help.

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Seçilmiş Həll

Sorry about the error in the link. Looks like that older spelling that I still had with "Web sites" instead of "Websites" no longer work. I've corrected it.

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That link worked and I was able to solve the the problem I was having. Thank you so much for your help. I have to be honest, I had my doubts at first that I would get any help using this forum, but you have proved me wrong. Thanks, again, for your quick and efficient response.

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You're welcome Patti.