When I tested midi in magma:
ERROR: MIDI Compiler: (MIDI FILE): Multiple tracks share the name PART VOCALS
Your MIDI file has more than one instance of the track name 'PART VOCALS'. Yes, yes it does. Make sure that the first event for each track is a TRACK NAME event and you don't have repeated names. You may have one track on top of another and you can't tell, so move them around in REAPER to find the offending track. It's there. Look for it. Trust me, I'm a computer program.
I have already search arround the track, and there is no other Part Vocals event or a track on top of another.
Can someone help me?
Link of project and audio files: