organassist wrote:I may be wrong but I believe the problem is this.
On my Johannus 20, I cannot disable the combinations. Yes, it is possible to configure the combination so that it does not appear to set any stops. However this is an illusion as it is actually setting all the stops OFF. If you use this with HW then, when you press the piston it clears the stops, sends the MIDI message to HW which then sets the stops it requires. This will cause a break in the sound.
Without being able to totally disable the internal combinations, I do not see how you can prevent this problem.
David
If I understand correctly, this would seem to imply that the console's stop controls are assigned to virtual controls in Hauptwerk, otherwise those stop off and stop on messages should have no effect on Hauptwerk when the pistons are sending them. But we're warned in the user guide and here in the forum that we can only assign a digital organ's MIDI stop controls *or* its MIDI pistons to Hauptwerk controls, never both.
Could this be an example of the symptoms Martin was warning us about with trying to use both pistons and stops?
Another possibility is that the virtual General Cancel is mapped to a MIDI message that the console sends on its pistons. Or are you saying the blank-registered pistons literally send out the general cancel message? In that case, the Hauptwerk G.C. could be mapped to some other type of MIDI control or left unmapped, perhaps, so the console's cancel does nothing to HW.
We really need to see that activity log!