All, I've been struggling mightily to fix this issue. I'm on a Mac OS 10.10.5 and although my Kontrol 61 is showing up in USB on my Mac report and testing out fine in the Audio/Midi Studio, I can't seem to get Komplete Kontrol to recognize it. It is greyed out as a controller option. In other words, it wiill play all the instruments and send MIDI signals, but the Browse function and all of the upper controls on the keyboard are useless. Any ideas?