Appears to be a problem. The dislike count flashes up and then changes to "NAN" bit odd!
Edit: Installed latest version to fix. Thanks.

Very pleasant extension!

Thank you! it works!

much needed extenstion.
NOTE : also if you see NaN instead of Dislike counts, reinstalling fixes the problem.

Yes.

Thank you! it works! for those experiencing Nan. remove it and install it back for the new version.

As of Dec 14th it has to use estimates. It's better than nothing...

nice plugin but today it didn't work. did they finally close off the API?

It's so sad that we have to use an extension just to use a basic feature.

Honestly this is the best we got in seeing youtube dislikes and works fine.

If you see NAN instead of dislikes try reinstalling the extension for the latest version that work for me.

Зачеркнуто (Вчера работало, но сегодня утром перестало. Переустановил расширение для браузера 2.0.0.1 - показывает "не число"; поставил скрипт с сайта в greasemonkey/tampermonkey - показывает " 0 ". Может они опять что-то поменяли.)
Firefox x64, Win10x64.
PS: В chrome работает.
UPD: У меня окно с YT на другом мониторе. Когда перенес в основное окно где все вкладки, дизлайки появились. Всё в порядке, всё работает)

Very good extension sad that YT is hiding its public dislike count now.... RIP Return Youtube Dislike :(

О да! Верните людям их дизлайки! :)