During recording I got "route already exists" message
followed by "circular route found" messages.
I'm pretty sure it's only when I use the
'Duplicate Selected Tracks' feature on wave tracks.
(Yep, this feature sure is proving handy. So many re-takes! )
Possibly because the wave tracks are already routed to output by default.
Possibly when switching the tracks from stereo to mono, then duplicating.
Not sure. Need to test more.
So far, it can be worked around by saving then restarting.
My department. Likely some loose ends I need to tie up there.
I'll try to fix by Sunday if y'all can wait.