Reply to S2 freezes when jog wheel is touched

Hi DJTT

I'm having a evening mare with my S2, everything seems to be installed properly I get sound etc once a track loads up but as soon as I touch the jog wheel and sometimes the fader the S2 drops out I lose audio and controller until I power cycle the S2. I've installed traktor on my work laptop and tried it on that and it works as it should. Also when it crashes on my PC if I then plug the S2 into my work laptop and load traktor it still doesn't function.
Setup Info

Core i5, 4gb Ram, Win 7 pro, traktor 2.5

Any help appreciated guys!