I have a U-Phoria UMC204HD. In MainStage, I've selected certain busses to output out of the alternate outputs of the U-Phoria UMC204HD but no audio gets routed. What am I doing wrong?
Switched to Logic in 2021 from DP.
Logic 10.3 on Mac Pro (2008). Logic 10.6 on MacBook Pro (2012).