When doing a dynamic split and Create Chromatic Midi file it is possible to end up with midi notes at velocity 128.
This appears to be an illegal value and must be hand edited back to 127.
The project is attached in this thread.
http://forum.cockos.com/showthread.php?t=91400 msg#8
Do dynamic split on the mp3 to see the result.
A midi item is in already in the project showing the errant notes.