All of a sudden I can no longer add videos to my YouTube Playlists using the DSM-312. I can only perform this function via my computer & not on my DSM-312. Why did this change? I've been using the DSM-312's (I have 4 of them) for a couple of years now with no problems...then viola! It's a very irritating problem that I'm desperate to get help with PLEASE. Can anyone help???