Spicefly Sugarcube not adding tracks.

Have just noticed that Spicefly is no longer adding tracks when a musicip playlist finishes. Tried just playing one track to let it add additional tracks and that did not work.

Don't know when this started happening since I generally don't finish a musicip playlist.

Feel like over the last few months I probably changed a setting that has caused this but I have no idea what to check. Spicefly Sugarcube is enabled in the gui as is musicip.

Suggestions?

Thanks
Steve