Hi everyone, I have been used PsychoPy Standalone 1.82.01 (I think) for a long time under windows 8.1, and it worked well, until I upgraded to the newest version (1.85.0). After installation (of course, after the previous version have been removed), the app does not start, only the splash screen ap…

One thing is that I don’t believe the way you tried to start it from the command line is correct. I’m not a frequent Windows user so someone correct me if I’m wrong, but I think you have to put the two lines you entered on one single line, with a space separating them. Maybe this way could get some …

Oh yes, you’re absolutely right, thank you! I don’t have a clue why I have thought I should do differently. Here comes the error message. And I don’t know why I don’t have that dict. [image]

Well that error makes me think we still haven’t successfully run psychopy from the command line. It looks like the first part (the call to psychopy’s Python interpreter, python.exe) is working, but path to the app isn’t being entered correctly. I would use the “tab” key to have the command line hel…

It’s very weird, but the case is (as I wrote in the original post) I do not have the folder inside the “site-packages” which should include the “psychopy\app\psychopyApp.py” parts. As I see, it should have to end with “.egg”, but I only have one with ending “.egg-info”, and you can see in the 1st po…

Sorry I haven’t responded, I’m going someone else will since now I’m not sure where the problem could be, hopefully someone else will respond soon. But just to clarify for others, there is no psychopyApp.py file anywhere within that folder?

Yeah, inside PsycoPy2/Lib/site-packages, there is only that PsychoPy-1.85.0-py2.7.egg-info folder which is similar to one we need, but there are only 4 .txt files and a file called PKG-INFO in it. I have reinstalled the app again, checked that the uninstallation have really removed everything, and …

Later tonight I’ll try to install the standalone on a Windows machine and will see what it’s supposed to look like.

Ok so the psychopyApp file is not in the egg, but here: "C:\Program Files (x86)\PsychoPy2\Lib\site-packages\psychopy\app\psychopyApp.py" So run this to open it from the command line to start it, and hopefully we can finally get a useful error message: "C:\Program Files (x86)\PsychoPy2\python.exe"…

Yes, thank you very much, we finally get the error message: C:\Windows\System32>“C:\Program Files (x86)\PsychoPy2\python.exe” “C:\Program Fi les (x86)\PsychoPy2\Lib\site-packages\psychopy\app\psychopyApp.py” Traceback (most recent call last): File “C:\Program Files (x86)\PsychoPy2\Lib\site-pack…

So again I’m not a regular Windows user, but looking at some of those links, it looks like Anaconda is a science-oriented distribution of python, and it has its own package manager (which is a great thing once you get familiar with them!), meaning you can use it to install / update / remove packages…

PsychoPy won't start

Other

jon April 6, 2017, 1:19pm 17

Apparently Damien knew of one suggested fix for this, see the link below:

Topic		Replies	Views
Standalone application not starting; Win10 Other	18	5735	December 14, 2023
PsychoPy won't start on Windows Coding	35	4846	January 22, 2021
PsychoPy won't launch Other	2	3581	September 9, 2016
Unable to Start PsychoPy Other	9	4786	October 7, 2020
Psychopy just stopped working and then would not boot up Other	16	2351	November 25, 2016

PsychoPy won't start

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