Thank you, keep making us happy!

Now I can finally make a switch to Firefox! I was missing this addon on Firefox a lot, now that they added it I can give it 5 stars. This is one of a kind extension, nothing comes close to having such feature-rich + intuitive interface extension options. A must have for anyone watching a lot of Youtube!

best YouTube enhancement extension existing!!!
+ open source ;)

thanks for this addon.
I have resolved the problem the solution is remove the extension, clean the browser with ccleaner and reinstalling again, and now is working everything

By far the best Youtubeaddon for the new Youtube, finally on Firefox without any hassle, thank you! :D