Unable to update extensions from the Gnome Shell Extension after the last two firefox updates
Mozilla is removing NPAPI plugin support from Firefox 52 so the gnome-shell plugin is not going to working in Firefox 52 and later anyway.
This may help (but for FF < 52.0). 1) go to "about:addons" or Tools->Add-ons. 2) select "Plug-ins" 3) Choose "GNOME Shell Integration" plugin and select "Always activate" also see if the "GNOME Shell Integration" plugin is even installed.
O, NO, I DON'T WORK ANYMORE
Watch that doesn't update its not even activating integration! and preceding update was!
I think this should be duplicate of bug 1343710
Marking as duplicate, as suggested by Yuri. *** This bug has been marked as a duplicate of bug 1343710 ***