Another bug :(. I discover tonight whilst playing that when i load beatgridded track to deck (which is controlled by Pioneer CDJ 2000 NXS2) it completely freezes the player. Even if i pull the usb cable, it still shows latest loaded track on player and no buttons are responding. On Traktor app when i hit play with mouse, it works, but Pioneer player is frozen and only thing to do is power cycle the player. Which sucks! NI, since Traktor 4 i have been both excited and also very disappointed, fix the problems or our romance since Traktor 1 will be the end.