| Reference | Downloads | Github

Can't open in Mac


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

OS : Macbook, version 10.11.16
PsychoPy version 3
Standard Standalone

What are you trying to achieve?:
Trying to open the download from, but it stuck on “verifying”


I had the same issue (on mac os 10.10.5) but it worked after I uninstalled Psychopy 2 and all associated files (which I identified using a program called AppCleaner), and then tried again to install Psychopy 3. The verifying-process still took a while but it eventually opened.


Hi, thank you. I used the Appcleaner to remove the and related files. Re-installed the app and wait fro a long time, then it works.