# Psychopy 1.1 Windows 11 crash problem

**URL:** <https://discourse.psychopy.org/t/psychopy-1-1-windows-11-crash-problem/46560>\
**Category:** Builder\
**Created:** [February 9, 2026, 3:36pm UTC](https://discourse.psychopy.org/t/psychopy-1-1-windows-11-crash-problem/46560 "2026-02-09T15:36:45Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![wakecarter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/wakecarter/32/5753_2.png) [@wakecarter](https://discourse.psychopy.org/u/wakecarter)\
**Post date:** [February 9, 2026, 5:49pm UTC](https://discourse.psychopy.org/t/psychopy-1-1-windows-11-crash-problem/46560/2 "2026-02-09T17:49:54Z")

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What year is your version from?

Is an upgrade possible?

> [@The problem of running multiple versions of PsychoPy](https://discourse.psychopy.org/t/the-problem-of-running-multiple-versions-of-psychopy/45631):
>
> I have installed two versions of PsychoPy (2025 and 2021). However, for the 2021.2.3 version of PsychoPy, only the runner can be opened. When I try to open the builder and coder, they flash once and then there is no response, and the interface doesn’t come out. But the 2025 version can be used normally. The problem is that I have other uses for the 2021.2.3 version, so I must open it. I don’t know where the problem lies. Can anyone help me? Thank you very much! p.s. the error:Traceback (most r…

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