What are the symptoms ? What are your midu connections ?
You have to be careful with the notes you send, from C5 to C7 (and avoid send + receive clock i think).
NOTE MAPPING SUMMARY
C1 - G#1 (24-32) | Track Trigs | Trigger PLAYS FREE audio tracks control
A1 (33) | Seq stop | A#1 (34) | Seq Start/Stop | B1 (35) | Seq Start/Restart
C2 - G#2 (36-44) | Sample Trigs | Trigger Samples assigned to tracks (TRK DEFAULT)
C3 - G#3 (48-56) | MIDI Track Trigs | trigger PLAYS FREE midi tracks control
C4 - (60-71) | Track recorders/Pickup machine (*)
C5 - B5 (72-83) | Trigger track default sample chromatically, octave - 1
C6 - B6 (84-95) | Trigger track default sample chromatically, octave 0
C7 (96) | Trigger track default sample chromatically, octave + 1
(*) TRACK RECORDER / PICKUP
C4 (60) | Combo rec
C#4 (61) | INAB rec
D4 (62) | INCD rec
D#4 (63) | SRC3 rec
E4 (64) | Pickup Play/Stop
F4 (65) | Multiply
F#4 (66) | Mute active track
G4 (67) | Cue active track
G#4 (68) | Active track up
A4 (69) | Active track down
A#4 (70) | Toggle Seq sync
B4 (71) | Toggle Seq sync+start