This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Addons Hidden in Addon Manager after updating to Firefox 8

  • 2
  • 25
  • 2 views
  • Nzaghachi ikpeazụ nke cor-el

more options

After updating to Firefox 8, none of the extensions in my Add-on Manager from my Firefox 7 installations are visible.

Also, when I try to install an add-on, I get an error message saying that the extension can't be installed because Firefox cannot modify the needed file.

After updating to Firefox 8, none of the extensions in my Add-on Manager from my Firefox 7 installations are visible. Also, when I try to install an add-on, I get an error message saying that the extension can't be installed because Firefox cannot modify the needed file.

All Replies (2)

more options

Simply install ONE of your existing add-ons. Restart Firefox. Patiently allow all of your add-ons (unless you don't want them). Restart Firefox. Browse happy. Don't put in nearly as much effort as I did researching the problem.

Edeziri site na NickNackGus

more options

If you get an error message saying that "the extension can't be installed because Firefox cannot modify the needed file" then that is a problem with that extension and is caused by a missing unpack directive in the file install.rdf

Is that caused by installing a dictionary?