I've tried to embed playlists and always get the "Embed code appears to be Invalid" error.

The Utube page for my playlist:
http://www.youtube.com/playlist?list=PL854408FFE7149199
has a share button which I use to get the embed code--but the code gives an error.

I tried to fix the Dead video here:
http://videosift.com/video/Horizon-Global-Dimming
by just embedding the code from the first video in the playlist (accessed thru the playlist) and now it just plays the first video.

I've seen users do this so I know it's possible.

I'm only a Bronze--is this the problem? Also, I run Firefox 6.0.

Any help would be much appreciated.. Thank You.