Some things aren't real clear with what you have detailed, maybe you can clarify (I see this question here and on the NI forums but i'll just stick to here):
In Ableton>> 2 MIDI tracks>>Each Has Komplete Instrument Loaded (as VST).
But then you say:
Track 1 I choose Piano and record notes EFG
Track 2 choose Bass, record notes EFG
track 3, synth, record notes DCB
Do you have 2 or 3 tracks?
I choose all instruments in each track using the browser on the Mk2 keyboard.
So by this I assume you are just saying that the way you have loaded an instrument into the track (within KK) is by using the instrument browser on the keyboard.
Sometimes it plays all notes correctly, sometimes it shifts notes of either track a half or whole step up or down.
What do you mean "Sometimes
IT plays all notes correctly"... Is it when you play the notes on the keyboard with your hands, when you playback some recorded MIDI, when Pennywise has a crack?
Are you saying when you play EFG on your keyboard it records as EFG but pays back as a different set of notes or when you play EFG it actually sends different notes?
Things to check:
- Is the Scale mode active at all?
- Did you transpose the keyboard by semitones?
I can Save and Exit and come back and its fine and then it starts messing up the notes.
So by this I assume you record some playing and it does not sound as you played (it has changed after being recorded) or it does not sound right as you play? Also when you say "It starts messing up" how do you mean? Is it after some time, when you press a certain key? At what point/how does it start messing up.