Sound not playing after the second trial

Hi,
this solution might help in your case, too. Between Windows and MacOS, only the file path should differ, so

  1. Open “/Applications/PsychoPy3.app/Contents/Resources/lib/python3.6/psychopy/sound/backend_sounddevice.py” with administrator rights
  2. Search for self.sounds.remove(thisSound) and remove .sounds
  3. Save the file
  4. Restart PsychoPy