If logged in at youtube, I can't download my own videos (only a 0 kB- file is downloaded then). When logged out, it also works for my own videos. Very strange, please fix this. Update: I'm using v 15.7, but the problem still occurs. No data downloaded of my own videos, if I'm logged in!
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 :)
