For some reason, my Computer (running on Windows 8.1) is unable to start the PsychoPy3 App although PsychoPy3 has been working perfectly for months. I searched through a lot of the threads on this website and tried several suggestions that have already been made. Unfortunately, nothing works so far.…

Hi @jon , thanks for your answer! You are right, I didn’t find the right folder. I found them now and deleting the appData.cfg file indeed solved the problem. One reason I didn’t find the correct file was that the suggested code on the troubleshooting page, that is: python -c “from psychopy impor…

Hi @joscha.dutli , have you tried the suggestions on the troubleshooting page ?

Thanks a lot for the quick reply! To be honest, I didn’t go through all the suggested steps as I thought that uninstalling and reinstalling PsychoPy would solve problems like cleaning preferences. However, I took a closer look now and it seems like the problem is coming from the file appData.spec …

[image] joscha.dutli: PS The files named on the troubleshooting page (i.e. userPrefs.cfg and appData.cfg) don’t exist on my computer which I think makes sense as I reinstalled PsychoPy and wasn’t able to open it since. Are you sure? PsychoPy always saves those files when you use the applicati…

This also solved it for me! For those who also aren’t Windows savvy (like me)- the AppData file exists outside of the psychopy folder. It took me a minute to find it (using the search function on windows). For me its exact path was Users/Display/AppData/Roaming/Psychopy3 Thanks to everyone who solv…

Standalone PsychoPy3 will not open

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s.bassoon July 1, 2020, 4:13pm 7

Thanks, this just helped me resolve the same issue

PsychoPy does not open "configobj.ConfigObjError: Parsing failed with several errors"

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Standalone PsychoPy3 will not open

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