Feedly Extension will not be installed. Solutions?

Apparently, some are not having problems with the extension installation (see the dates of the examinations on the sheet), but I am. It installed perfectly on Firefox 21 before (more problems with it later if). In FF 22 is no longer installed now.

What happens is whatever the method (i.e. install directly from the page of the add ons or extension console built into FF) the extension is not installed. I have download the extension, he invites me to restart. I do it, only to come back to the inability to locate even the button for the extension. It is listed as installed in my overview of the extensions, BUT I can always click on the button install Feedly extension page (https://addons.mozilla.org/en-us/firefox/addon/feedly/). Subsequently it "installs" again, but with the same problem as before.

I even went back to 21 FF to see if it would work again, but it was nothing not done, now I'm really confused.

No matter how many times I try (complete uninstall / reinstalling FF did not help) the right extension will not be installed. Is - fixable?

Version 14 works for me
https://addons.Mozilla.org/en-us/Firefox/addon/feedly/versions/?page=1#version-14.0.482

Tags: Firefox

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