Unhandled Internal Error AGAIN DESPITE SWITCHING TO LATEST (2021) VERSION

Hi again,

A few months ago I posted about a phrasal judgement task I built using the builder mode on Psychopy version 2020.2.0 on Windows 10 OS and was struggling intensively to run the experiment. It turned out that my excel file was in a different folder to my experiment file, which seemed to be the problem. However, the experiment still would not run.

I was then informed by an advisor on this forum that he had actually manged to get the experiment running perfectly when I uploaded it to the thread. He suggested I was using an outdated version.

Today, I reinstalled psychopy under what seems to be its most recent version (V2021.1.2). However, EXACTLY the same problem still persists and I am completely unable to run the experiment. This is the message I received when trying to run it on the most recent version of Psychopy today.

Traceback (most recent call last):
** File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\scriptProcess.py”, line 123, in whileRunningFile**
** self.onProcessEnded()**
** File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\runner.py”, line 590, in onProcessEnded**
** ScriptProcess.onProcessEnded(self)**
** File “C:\Program Files\PsychoPy3\lib\site-packages\psychopy\app\runner\scriptProcess.py”, line 140, in onProcessEnded**
** self.app.runner.stdOut.write(buff)**
AttributeError: ‘NoneType’ object has no attribute 'stdOut’

I have absolutely no idea what to do or what the problem may be. My laptop is fairly old but copes perfectly fine with software like SPSS Statistics, Microsoft Powerpoint etc so I doubt that’s the issue. In which case, I’m completely lost for options.

Thanks for reading and kind regards,
Liam