Experiment will not move past Initializing the Experiment on Pavlovia

OS (e.g. Win10): Mac
PsychoPy version (e.g. 1.84.x): v2021.1.4

I have uploaded an experiment onto Pavlovia and when I try to run it, it does not move past the “Initializing the Experiment” page. However, it does work perfectly on PsychoPy. Does anybody have any tips on how to solve this issue? The experiment includes audio recordings and a slide bar for rating.

I have tried re-uploading the experiment, checked to ensure that all files were properly uploaded and tried to run the experiment on the pilot and running view. After trying these things, the experiment still did not work. There were nit any error codes.


This usually indicates a syntax error in your JavaScript. Are you trying to import anything? Please take a look at my crib sheet.

Best wishes,