When importing a pre defined playlist in scheduled DB playlists, attached error warning shows up. Not able to save the playlist.

When importing a pre defined playlist in scheduled DB playlists, attached error warning shows up. Not able to save the playlist.

I get a similar message if I have deleted a track from the database. The playlist is looking for something that dosent exist. Trying to play each track brings up the culprit.
Thanks bulldogdave.