That's an error that is displayed if you have an arpeggio or handshape that doesn't use notes on more than one string.

I've had it pop up in a few weird locations. In one example I had removed all of the handshapes in a difficulty level since they no longer had more than one note. The editor gave me that error when I tried to save. I looked through the difficulty levels and came back and then re-saved and it no longer gave me the issue.

 

I couldn't track down or re-create the issue, unfortunately. It would be nice however if the editor would shift the view to the beginning of the handshape in question, much like it does with fret hand position errors.

I can add a seek to the position where that issue occurs, but it's likely that the proprosed change to the handshape/arpeggio behavior would prevent it from happening again until some other special condition or bug came around.

I can update MIDI tone and clap sound cues to not trigger for ghost notes.

 

That would be very helpful.

Thanks again for the help @@raynebc, @@Rockfirstlast. The custom I was working on for this topic is now complete. Metric - Blindness.