Hello BJT,
Many thanks for the interest in Hauptwerk.
My guess is that somehow you accidentally have some stops configured to respond to that MIDI note.
Please try:
- Launch Hauptwerk.
- Go to the 'General settings | MIDI ports | MIDI IN ports' screen tab and make sure that all of the MIDI IN ports to which your MIDI encoders connect are ticked in the left-hand column:
- Untick everything on the MIDI OUT ports tab (assuming you don't need MIDI output to control solenoid-actuated/illuminated draw-knobs/tabs).
- Load St. Anne's.
- Use 'Organ settings | Organ configuration wizard' to reset all MIDI settings.
- Now use right auto-detection on each of the virtual keyboards to configure them again.