Hey there
I am using Yamaha Motif XS8 for my main MIDI controller. It set to send/receive MIDI via USB. I get another MIDI data source coming likely from Sonar creating MIDI Loop, that causes chaos. I have Komplete Kontrol controller connected as well, but it does not transmit any MIDI data. I also have MOTU Midi interface but all Ins/Outs unchecked in preferences. But something sends MIDI data and masses up tempo of Motif to make it run like at 500bpm. Where can it be coming from? Thank you.