Reply to Numark Mixtrack not working in Traktor

Hi All

I have a wierd one. My Mixtrack has stopped working with traktor. The computer regconises controller and some lights are displayed however any inputs dont work. What ever button I press it does nothing. I have tested on a mates machine with VDJ and that picks it up fine so its not a hardware failure. The wierd thing is that if i press buttons on traktor the buttons do light up on the controller. Any ideas

I have tried all the basic things such as reinstall traktor and mixtrack driver. Tried running throught the wizzard and using a TSI file for the mixtrack yet it still wont work!

I am running windows 7

Cheers