Change Log for OP-1 OS 11230 * MIDI Note Off's was not sent correctly in Controller Mode. Fixed. * MIDI Notes could get lost when sent to computer via USB. Fixed. * Spontaneous disk ejects could happen in Disk Mode. Updated. Please report if you experience any issues, including information about your computer model and OS. Disk Mode is currently one way (out) only. * Notes could be left hanging when using the sequencers. Fixed.