OS: Mac OS X 10.15.7 (19H15) PsychoPy version: 2021.2.0 Standard Standalone? (y/n): standalone What are you trying to achieve?: run experiment Before today I was running psychopy 2020.1.2 just fine, however I wanted to upgrade to 2021.2.0 in order to use the new microphone recording features. No…

I have the exact same problem. Running macOS Big Sur version 11.4 on a MacBook Air (2020). Also tried to role back to [2021.1.4] but this sadly did not help.

I’m also having this problem! I’m very new to using PsychoPy so I wasn’t sure that I had done everything correctly. But it’s encouraging (?) to see that others are having the same system error that I’m having. Hopefully it’s fixed soon.

Rooslucas, Does the following still not work for you even on 2021.1.4? [image] AlexHolcombe: Coder’s Demos->input->keyNameFinder.py

I’m guessing that the reason for the error is the following change noted in the Changelog: Py: hardware.Keyboard class now supports ioHub as a backend and will use that in preference to Psychtoolbox keyboard (PsychHID) if ioHub has been started before the Keyboard is created. ioHub keyboard is sim…

By editing the source code, I switched the keyboard from ioHub back to ‘ptb’ but that doesn’t fix the problem. On my machine, the failure occurs at the following line of keyboard.py (around line 188): buffer = _keyBuffers.getBuffer(devId, bufferSize) However the code around th…

Just here to say, I’m having the same issue!

fwiw, rolling back to 2021.1.4 did not work for me. I had to go back to a 2020 version entirely.

Hi There, Thanks for flagging. This is an issue the team were aware of, sorry it is affecting so many of you here! I need to check in on the status/progress - but watch this space and we will get back to you when we have an update! Becca

For me [2021.1.4] does work now. I had to change something in my settings: System Preferences > Security & Privacy > Input Monitoring and allow PsychoPy3. ( Name error: name 'event' is not defined ) So rolling back to the earlier version does help for now.

I have the same problem as smburns47. My Builder scrips that run just fine on 2021.1.4 (standalone) will not run on 2021.2.0 (standalone). I get the same error message as smburns47 reports. Even a bare-bones experiment (default with a default text component) crashes. Everything works if I reinstall …

Psychopy 2021.2.0 crashing Python on experiment start

Builder

wakecarter April 17, 2022, 6:37am 24

Unfortunately it seems that 2022 is not yet compatible with all versions of MacOS. Until there is a fix you may need to continue using 2021.2.3.

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No experiments run in psychopy 2020.1.3 (installs as .2) on catalina (10.15.6) Builder	1	1193	August 22, 2020
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Problem: can't run experiment, crashes immediately! Builder	7	4168	October 10, 2024
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Launch Error Mac Other	19	2991	October 3, 2025

Psychopy 2021.2.0 crashing Python on experiment start

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