Does anyone know what would stop Firefox's Download Helper add-on, and if there's a work-around? I'm in love with Angelus Animi's "Unity" video on YouTube, which leaves me in tears every time, and would greatly like a copy of it to watch offline (my Internet connection can be...recalcitrant...at times). Every time I've tried to download it, DH lets me pick where to store it (as if it's working okay), and then the "download" instantly finishes at 0 bytes, and nothing's saved. I've tried all five download options presented; zilch-o. It's the ONLY video that DH has acted this way with. Any help would be appreciated (even an alternate source for the video, although the mystery would remain).
