At first the script didn't want to do anything, after spamming my test channel, it finally decided to cooperate. It appears to be working fine, testing out various youtube links in my favorites that has both unicode and other odd characters. I'll keep testing every so often and see if I can find a way to break it again somehow. XD It did spit this out in the partyline though:
Tcl error [youtubesurl]: can't read "youtubeid": no such variable
That was when I posted this: http://www.youtube.com/watch?v=-KJOC0JBDt4 - it later decided to report it properly, so I dunno.