before calling new MidiOut or new MidiIn, you must first Dispose of any old one.
e.g
if (Gmidi.midiOut != null)
Gmidi.midiOut.Dispose();
before calling new MidiOut or new MidiIn, you must first Dispose of any old one.
e.g
if (Gmidi.midiOut != null)
Gmidi.midiOut.Dispose();