did you find the problem ??
I have exactly the same problem with a Utrack 24…
exporting a multitrack song with a midi file that contains program changes for the guitarist effects…
before cymatic it was played with a Logic pro and was perfect. the first song I did was fine exept that I coudn’t export the song at once with the midi file… I had to export on the usb key the audio files first and than the midi file… It worked for the first song but not the others.
uTrack 24 firmwire : 3474
uTool software : V2.0.034 Beta