while I'm mixing the blue play & record button in the Global section turns on & then changes to "Mixer view mode" then None of the buttons work except for the volume & scroll buttons on my S4 & my Z2./. when I had 2.6.1 this never happened, going to 2,6,2 it did this & also does it in 2.6.3. I contacted NI but they probly wont get back to me in days.. plese help, its annoying & sometimes I have to reboot.. I'm using a Macbook Pro btw never had a problem