Sonar X3. Loaded Session drummer 3 with each of the 12 outs on a separate track. Set up Session Drummer drum map. Tapping on any of the drums on the drum kit view sounds fine. Inputs and outputs register on meters. Dragged and dropped a MIDI program from SD into the MIDI track. Press play, nothing. Piano roll also does not respond with a sound when adding beats. Other synths working fine. Driving me crazy! What am I missing?