I am running Kodi on a Raspberry Pi. Sadly, now I can't install the YouTube add-on, as I get an installation failed error. Any insight? (and yes I am connected to WiFi, as the TED Talks add-on installed and it plays)
Good question, you might want to update your repos.
Its a fresh install, and the repos are up to date (if 2.5.10 is up to date for the official repo).