I haven't had any success with either a new processor or the test app. I have a hunch it may be how I connect the core to the din. When I shorted the top SC pin and the botton SO pin with everything running, I got a ton of Note On, Note Off, Control Change activity. The diagrams explain how to set it up on an earlier version, but this version's J1 has 10 pins, not 5. What do you think?