Add-ons list in Firefox is empty / blank
March 4th, 2010. Published under Uncategorized. No Comments.
In Firefox 3.6, I was suddenly unable to install or edit any of my add-ons. The list of add-ons was blank, and it would not let me install any new or update any existing add-ons. The add-ons themselves worked just fine in Firefox.
After doing some searching, I found the issue had to do with the use of Personas. This issue also can occur in Firefox 3.5.x. The following solution (found here) fixed the issue for me:
- Enter about:config (type “about:config” in the address bar of a new tab)
- Filter for “lightweightThemes”
- Erase the value for lightweightThemes.usedThemes
- Change the value to “false” for lightweightThemes.isThemeSelected
- Close and restart Firefox
Doing this of course removed the Persona I had loaded, but it solved the issue.