No Longer Works with YouTube Puntuado con 2 de 5 estrellas

Downloads from YouTube yield 0-byte files. Using latest versions (DownloadHelper 4.9.22 & Firefox 28).

This seems to be a recurrent problem, as I can remember times in the past where this has happened.

Downloads from other sites work fine.

Esta valoración es de una versión anterior del complemento (4.9.22.1-signed).