[CLOSED] CDJ 400 issue with stoping while in rel mode

Last weekend my CDJ 400's while using serato scratch live would just stop all of a sudden when in rel mode.  It would be counting down from the 15 minute mark and say with like 11 minutes still left for the count down it would just all of a sudden be at the end and switch to 2 and the song would stop.  What is causing this.  It has never happened before.  I have another show this Saturday so I am hoping to get some answers soon.  Thanks!!