I have had the same problem - it was due to the midi channel not being selected.

midi channel was set to 0 and my tts1 (edirol hypercanvas)defaulted to piano. maybe the OP has the same problem. it was easy to fix in RB but i'm not sure how to do it in BIAB.

my old thread is here but in the meantime maybe someone could help the OP select a midi channel? mike head posted that this would happen on all GM synths.

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Main=78794&Number=556521#Post556521

Last edited by Bob Calver; 03/02/21 11:55 PM.