How run an experiment created in recent version locally on an old installation of psychopy


I have encountered issues with version control, that drive me mad.

OS: Win11
PsychoPy version: 2024.1.5/2021.2.3
Standard Standalone? (y/n) : y
What are you trying to achieve?: My lab has experiment templates that we want to use, however, our local and offline experiment PC has an old version of PsychoPy (2021.2.3).

What did you try to make it work?: Select the wanted version in the newest version of the builder. Installing the old version and working from there is not of help, since then I run into issues opening the experiment templates, since they have been created under more recent versions.

What specifically went wrong when you tried that?: Even though I have Python 3.6 installed, I received the following message: “Requested PsychoPy version 2021.2.3 does not support installed Python version 3.8. The first version of PsychoPy to support 3.8 was version 2022.1.0.”

Thank you for your kind help, it is much appreciated!