Program crashes when it runs into a loop

If this template helps then use it. If not then just delete and start from scratch.

OS (e.g. Win10): Win11
PsychoPy version (e.g. 1.84.x): 2023.2.3
Standard Standalone? (y/n) If not then what?: Yes
What are you trying to achieve?: I’m trying to make SPRT

What specifically went wrong when you tried that?:

Hello. I’m new to psychopy.
I’m working on a self paced reading task and have completed a rough version of it.

However, I’m having an issue with psychopy exiting without any error message when the loop tries to run.
The loop in question was created with the builder only, without any additional code.
I’ve added an image of the loop below.

expTrials Properties 2024-02-09 오후 2_34_50

I have never seen a crash without any error message before, so I’ve been struggling to resolve it.

Recently, when I was working on a rough version, I downgraded and upgraded psychopy several times to fix errors.
I also upgraded python to the version released on February 6th.
Do you think this might be causing the problem?
If so, could you please suggest a solution?

Please let me know if you need any additional information.
Thank you in advance for your help.

Try removing the Chinese characters from the spreadsheet file name.

Are you saying that the experiment ends with exit code 0 (no errors) in the runner?


First, I renamed the condition file as you suggested.
expTrials Properties 2024-02-13 오후 5_03_59

But the problem is still not solved.
The program shuts down completely.
The runner doesn’t give any error messages, I just have to restart the program.
I have no idea what the problem is.

Thanks for your help.