GNOME Bugzilla – Bug 703099
extensions.g.o not detecting gnome version correctly on firefox nightly build 64 bit
Last modified: 2015-07-02 18:42:06 UTC
extensions.gnome.org is not working on the latest firefox nightly build on 64 bit on linux (fedora 19). The stable version of firefox on the same platform is working fine with extensions.g.org Nightly throws up the following error: You do not appear to have an up to date version of GNOME3. You won't be able to install extensions from here. See the about page for more information.
GNOME Extensions talks to a custom Firefox extension. Therefore, probably what happened is something landed that broke said extension.
Make sure click-to-play is off.
@Jasper : The default in nightly is true. I set it to false but its still failing even after browser restart. Also, the page doesn't show any indication of a blocked plugin.
ping
*** This bug has been marked as a duplicate of bug 685965 ***