something to do with that project then. try importing everything from that one to a 'virgin' project, see if it then works (or the problem carries over)...
a virgin template, fish... I saw that it was misbehaving with everything new, so I sent a blank project.. BUT!
Just as mysteriously as it had not worked... It ***just*** started working again. Here's my description of what happened.
As you had suggested, I tried creating and assigning new groups, with no success. Then after you wrote, I tried again. Same thing, no difference. I tried various modes of checking the PAN, MUTE, and VOLUME boxes... Nothing.
Then I tried MUTE, INPUT, and RECORD and... WORKING!!! Even when I revert to using only the VOLUME checkboxes... Everything is just working! (beats me!)
Thanks, fisherking... Thanks, David... Really appreciate the help!
MacPro 8 Core 2.4GHz 24GB RAM • Apogee Symphony 64 2 x 6 • MOTU 424 2408 (2) + 24 i/o (2) • OS 10.14.6 • Logic Pro 10.5.1