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If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): Mac 10.12.4
PsychoPy version (e.g. 1.84.x): 1.85.4
Standard Standalone? (y/n) If not then what?: y
What are you trying to achieve?: Just trying to run an experiment that had been working fine previously and suddenly stopped working.

Restarted and also tried making a new simple project and got the same error.

This is the error message.

Traceback (most recent call last):
  File "/Users/djw/Desktop/testsdf", line 14, in <module>
    from psychopy import locale_setup, sound, gui, visual, core, data, event, logging
  File "/Applications/", line 140, in <module>
    elif dev not in backend.getDevices(kind='output'):
  File "/Applications/", line 68, in getDevices
    devName = dev['name'].decode(osEncoding) # convert to unicode
  File "encodings/utf_8.pyc", line 16, in decode
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2019' in position 15: ordinal not in range(128)```