I am not sure where you went wrong. I do it all the time with files I get from the net when I want to learn the song.

I start PSRUTI, Open a midi file, click Compute Chords, check a chord based instrument track (e.g. piano) and depress OK , SaveAs button, Save and Yes. You now have XF chords in your midi.

You can print these out in PSRUIT or lookd at them on the screen, or they will display on your main screen as you play the midi.

If you have a file that does not seem to work, send it to me at mpb@sover.net and I will take a look.

Regards,

Michael