PsychoPy n170 fails on Windows 10 Pro

[sbastiaens]

• Windows 10 Pro
• Python Version: 3.7.11
• Brain Interface Used: Crown

When running n170.present (form visual_n170), PsychoPy freezes and python crashes.
The problem was fixed by removing show_instructions(duration). We think that the error comes from the fact that mywin = visual.Window([1600, 900], monitor="testMonitor", units="deg", fullscr=True) is repeated twice and therefore PsychoPy creates two screens which makes it crash.

[gbernal]

Hi,

I'm seeing similar issues when running the n170 experiment, p300, and so on. looking adding break points into the code, the code fails when it goes into mywin = visual.Window([1600, 900], monitor="testMonitor", units="deg", fullscr=True)
as mentioned by @sbastiaens I tried commenting out show_instructions(duration) but that didn't fix it for me

This is my setup
Windows 10
Python Version: 3.9
Brain Interface Used: Cyton

[2022-01-22 18:39:35.565] [board_logger] [info] openning port \.\COM19
Traceback (most recent call last):
File "C:\Users\ExpMachine\Documents\GitHub\eeg-notebooks\tests\00x__ssvep_run_experiment.py", line 20, in
n170.present(duration=record_duration, eeg=eeg_device, save_fn=save_fn)
File "c:\users\ExpMachine\documents\github\eeg-notebooks\eegnb\experiments\visual_n170\n170.py", line 37, in present
mywin = visual.Window([1600, 900], monitor="testMonitor", units="deg", fullscr=True)
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\psychopy\visual\window.py", line 343, in init
self.monitor = monitors.Monitor(monitor, autoLog=autoLog)
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\psychopy\monitors\calibTools.py", line 127, in init
self._loadAll()
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\psychopy\monitors\calibTools.py", line 446, in loadAll
self.calibs = json_tricks.load(thisFile, ignore_comments=False,
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\json_tricks\nonp.py", line 266, in load
return loads(string, preserve_order=preserve_order, ignore_comments=ignore_comments, decompression=decompression,
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\json_tricks\nonp.py", line 236, in loads
return json_loads(string, object_pairs_hook=hook, **jsonkwargs)
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\json_init.py", line 359, in loads
return cls(**kw).decode(s)
TypeError: init() got an unexpected keyword argument 'encoding'
Exception ignored in: <function Window.del at 0x00000224BE696160>
Traceback (most recent call last):
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\psychopy\visual\window.py", line 582, in del
self.close()
File "C:\Users\ExpMachine\miniconda3\envs\eeg-notebooks\lib\site-packages\psychopy\visual\window.py", line 2274, in close
self.backend.close() # moved here, dereferencing the window prevents
AttributeError: 'NoneType' object has no attribute 'close'

[gbernal]

I solved this issue by upgrading psychopy to 2021.2.3

[ErikBjare]

@gbernal Thanks for that, I updated to latest Psychopy in #167 so at least that shouldn't be an issue anymore.

[ErikBjare]

Hey @oreHGA I had to revert that PR, so we're still on an old version of psychopy.

[rkakrik]

Same problem in Arch Linux