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PsychoPy versions to avoid

If you are currently using any of the following versions, I would recommend that you upgrade before asking for support in these forums. For the older versions my recommendation is the to move to the last release prior to the next major upgrade (if you don’t want to move to the additional features or better timing a more recent version could give you).

2021.1.0 to 2021.1.2

2020.2.0 to 2020.2.4

2020.1.0 to 2020.1.2

3.2.0 to 3.2.3

3.1.0 to 3.1.4

3.0.0 to 3.0.6

Any version prior to 1.90.3

I’m happy to edit this list if you want to argue the case for a particular version to be included or excluded.


In general, any release ending in .0 is going to be wobbly! When we increase the middle number, it means there’s been significant features added or changed, so it usually takes a few bug fix releases (i.e. the third number) before it’s stable again.

The number of bug fix releases before it’s generally stable will differ according to the size of the changes and the size/availability of the team, e.g. 3.0.0 was a big change back when it was just Jon and volunteer contributors, so it took until .6, whereas 2021.1.0 was relatively small and we have a team of full time staff so it only took until .2.

In general .3 is a good rule of thumb!

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