Reply to Play & Pause button Problem

Hey guys

I have been using my 1.3 vci in combination with the djtt tsi file for a while now and never experienced problems untill today. After using traktor pro for like half a hour my pause and play buttons dont react anymore on both decks. The strange thing is my sync button now takes over the play buttons function..
When i restart traktor the problem is gone for like 10 minutes and then returns and once again i cant use my play and pause buttons..

Any one knows whats wrong?

Thanx

Nick