Running 14.04 gnome shell on ubuntu.
On one laptop when I am in the Tweak Tool, in Extensions and I select Get More Extensions, it opens Firefox and the top of the page on https://extensions.gnome.org/ shows. But, no extensions are listed. Looks like it is having trouble identifying what extensions I have installed. This work on my other 14.04 systems. Suggestions?
Firefox does have the gnome shell integration plugin installed.