Obliged to used Chrome (sorry ;-) in December as Evernote Web Clipper was not working with Firefox. Re-installed today (04 Jan), and it works!

The plugin works again. When my browser closes, all the cookies are cleared, so I lost the login. In this new version the username/password is retrieved from the encrypted firefox password store. Great. Exactly what I wanted. Thanks.

It's a good addon.

If any problem happens in the latest version, you can always go back to older version by downloading from:
https://addons.mozilla.org/en-US/firefox/addon/evernote-web-clipper/versions/

692 삭제하고 620으로 설치하면 됨
https://addons.mozilla.org/en-US/firefox/addon/evernote-web-clipper/versions/
서울휘님 감사~

I use Evernote Clipper and uBlock Origin.
the entry "||evernote.com^$third-party" in Fanboy's Annoyance List block Clipper connect to evernote server.

Apparently the latest firefox update broke a lot of addons, one of them is the evernote web clipper.

uBlock origin (and other ad blockers using adblock rules subscriptions) block work Evernote Web Clipper.

Reason filter "BitBlock List" it contains a rule:
||evernote.com^$third-party

If you disable it, the problem goes away. You can add a filter permitting.
@@||http://evernote.com^

same err with @xRay's, except that I'm using Arch Linux.
After I upgrade Firefox to 50.0, I get this err every time I try to login.