Hi,
There are a number of reasons that a note may go wonky. If you have a file that you know has a bad note, please post it or send it to
support@notation.com and I'll take a look at it. I'll need to know specifically the note that is causing the problem. It would also be helpful to know what MIDI playback device you're using (eg. GS Wavetable, GPO via MapleMIDI cable, external keyboard, etc.)
ttfn,
Sherry