Rated 4 out of 5 stars

Tried it a few days ago, seemed to work, but now nothing from YouTube is downloadabke any longer (FX 45.9.0).

A BIT LATER: weird - refreshing the page on YouTube activates the add-on. Don't ask...

In which case 4**** instead of 2.

This review is for a previous version of the add-on (2.09).