Check your favorites via your PC and remove the ones in error. When I move the included items from the playlists to "Favorites" on the PC, they appear under Favorites and can also be played without error in the net-tv app.
When your playlist is fully functional than it is also shown when you login via You Tube on Net TV. Why does the saved playlists not shown in the net-tv app ? When I choose youtube playlists at Net-tv nothing happens.
Or you can simply hold the Home Menu buttons until you see the front status light on the Apple TV start rapidly blinking.
When you release the buttons, it will force a reboot.
There is a site called that will track your youtube favorites for you.
It gets your list of favorites in a similar way to Net TV, so you can compare the list against the list directly from the You Tube site and figure out which ones are causing the problems Phillips suggested above.
When your playlist is fully functional than it is also shown when you login via You Tube on Net TV.
It goes wrong if your favorite list in You Tube has some videos which have some errors in it, like "Copyright" or "video deleted from You Tube".Go to Settings Screensaver and select Apple Photos, My Photos, Home Sharing or My Music.Each selection comes with different settings to tweak, such as the transition between photos or how often new Aerial screensavers are downloaded.A faster way to quickly delete multiple applications is to go to Settings The Menu button does more than take you to the previous page.If you double-click it, the screensaver will start.if you do not know an answer, it would help if you'd state this so that we at least know the fault is not on the "silly user" side.