In the last weeks, Smart Youtube stopped showing my playlist in a correct way. I tried many things to get it to work, but without luck.
It will work correctly with one video, but not with a playlist.
The code I am using is: httpvp://www.youtube.com/playlist?list=PL79B0E8F6F42DAD31 ...
It will show the black box and options 'Playlist' and 'Play all', but once you hit that, it will give an error: Video is non existing?