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

FF 52.7.3 ESR and themes no longer working

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

more options

I had a theme I was using for years and years. But there was one problem: The "new tab" plus sign was missing. After much work I could get it on the extreme left of the page or the extreme right, but not after the last tab like it should be. So that's when I made the fatal mistake of restoring the default settings.... yes, I fixed the plus thing, but now my theme did not work. In fact NONE of them work except the space theme and the default.

And worse, when I click on "get more themes" all the theme previews are missing. When I click on the preview button it only changes the color of the bars, but not the imagery. :-(

Very sad day. I really miss my themes.

All Replies (1)

more options

Sounds that you no longer have the default permission(s) for installing extensions. Preview only works when you have this permission enabled.

Previewing a lightweight theme (Persona) only works on sites that are white-listed via an allow exception, so make sure to have an allow exception for the addons.mozilla.org domain. You can see the permissions for the domain in the current tab in:

  • Tools > Page Info > Permissions > [X] Install Add-ons