I've done many projects in this manner and they all worked until todays. Must be some setting. I'm using Studio on prime.
Using a yamah mg10xu mixer.
This always worked on many many tunes, so frustrating it no longer works.
REsolved.
Tried my ux1 and no problem. So it is obviously the mg10xu. Tried various things and after a couple of hours Ahhhhh stupid PAD button (whatever that is for) was causing the issue.
My brain failure.....