This doesn't work anymore. Support page says download version 15.5 , but this version is not available here. The latest version is 14.4, from 3 months ago, while the support page states a new version was released on July 1st.
Pls. update to latest v 15.7, whenever youtube changes code every downloader out their breaks. This time it took longer for me to fix and then ever longer for mozilla to review and approve the update. If you find the addon working again, pls. re-rate the extension :)
