DDJ 1000 AUDIO UNAVAILABLE MESSAGE

New DDJ 1000 owner here. 

I have had the unit for a few weeks and run into a problem in the middle of the night without any warning the track that I would be currently playing Channel 1 or 2 a message on the jogwheel and on my laptop (MacBook Pro) comes up with the error that says "Audio Unavailable).

Song still plays but I try to switch any of the inputs up top (USB A/B/LINE) song is still playing with meters registered and seems like the only solution is to completely shut the unit off and put back on.

I have the latest firmware and drivers.

I have used a friends DDJ 1000 and had no issues and only run into this problem with mine.

Please advise

Thanks 

Danny