PsychoPy version: 2020.2.4
Standard Standalone? (y/n) : y
What are you trying to achieve?:
It is a large and rather complex code for presentation of visual stimuli. It also involves EEG and eye tracking. I use different versions of this code for about a year.
What did you try to make it work?:
Nothing because the error appears only after installation of the new Psychopy version 2020.2.4.
What specifically went wrong when you tried that?:
On exit, either on “Esc” or on the end of the experiment, it gives the error and an invitation to report it to the developers:
Traceback (most recent call last):
File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\scriptProcess.py”, line 118, in whileRunningFile
returnVal = self.scriptProcess.poll()
AttributeError: ‘NoneType’ object has no attribute ‘poll’