Maybe it's one of those bugs that were observed in earlier versions for users of NI keyboards, when Omni is selected as MIDI IN on an instrument track for the instance of the Komplete Kontrol VST Plugin. It would somehow turn into several MIDI ports selected at the same time: * Komplete Kontrol - 1 (first physical MIDI out over USB that contains the keybed data - notes and controllers) * Komplete Kontrol 1 (MIDI Out of the first instance of the Komplete Kontrol VST plugin loaded in the