Thanks for the great work. I don't think that is the issue, though, as Addictive drums doesn't follow the GM layout, so I had to map out a mapped instrument on my own. What I DID do, however, was de-select the little wire that seems to flow down the left hand side of the hyper editor (each voice seems to have a little button there, and the wire connects them, apparently). If this isn't disabled, then you can't make hits on the same beats with different keys. Something to do with overlapping MIDI perhaps? I am almost a complete MIdiot, so I have no idea what I did, I just know that it seems to be working.
Now, if I could only change the colours of the hypereditor! :-D
Again, thanks for your wonderful tutorials. I can't imagine how you have time for doing these things, coming up with new brain-twisters, and composing, teaching, and a personal life all at the same time.
PS, maybe I should re-hook up those nodes for open and closed hi-hats?