This might have to do with the chosen MIDI output synth device or soundcard and a bit gone bump in the night or the like. No, I don't know for certain that is the thing, but am remembering getting a message similar to that one at the same time, after pressing Play.

Try doing the exact same thing the exact same way with the pgmusic demo song files to make certain you aren't dealing with corrupted song files.

If it is reproducible, first thing I'd try is Opts -> Return to Factory Settings command, button number 2, which resets everything including your soundcard/MIDI selections.



--Mac