Howdy Lawrence,
Thanks for your patience here. I'm just trying to untangle whether there is some setting that got "bumped" in Musician that is affecting how things get routed to your keyboard or if it's a setting for your DGX that got/gets lost in the MIDI communication between Musician and your DGX. We know that at some point in the past it worked properly, but now it doesn't. That much at least is a good thought
You mentioned that One Man Band still works fine, but that doesn't surprise me. I see from the description at
http://www.1manband.nl/omb.htm that it's very much a Yamaha-oriented package, and so I would expect it to support Yamaha products quite well.
ttfn,
Sherry