This is super random, and im not even sure I can call it a bug, but watching the most recent unprofessional fridays I wanted to watch this video, and it seems to be oddly one of the few videos that just arent working.
Had the same urge and noticed the same problem. The video says it's 00::00::00/00:00:00, in progressive, streaming, and on youtube. It also won't run on the twitch channel. The only way to watch it was another uploader on youtube. I suspect it may extend to the streams labelled as justin.tv streams, since others just after that time frame will work.