# PsychoPy Installation Problem

**URL:** <https://discourse.psychopy.org/t/psychopy-installation-problem/5504>\
**Category:** Other\
**Tags:** installation\
**Created:** [October 8, 2018, 8:28pm UTC](https://discourse.psychopy.org/t/psychopy-installation-problem/5504 "2018-10-08T20:28:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Jin\_Jeon](https://avatars.discourse-cdn.com/v4/letter/j/43a26b/32.png) [@Jin\_Jeon](https://discourse.psychopy.org/u/Jin_Jeon)\
**Post date:** [October 8, 2018, 8:28pm UTC](https://discourse.psychopy.org/t/psychopy-installation-problem/5504/1 "2018-10-08T20:28:45Z")

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Hello,

I am trying to install PsychoPy version 1.90.3 with PsychoPy2\_3 version on my different MacBook Pro MacOS 10.11.6.

I used Anaconda to download Psychopy so within Python, I can import PsychoPy fine.

However, since I also want the GUI, I want to use the regular standalone installation, but whenever I install it, the PsychoPy loading page screen shows up, but never gets processed. When I hover mouse over it, the ‘wait’ cursor shows up forever, without doing anything.

I checked the troubleshooting page to check for appData.cfg file and userPrefs.cfg file in my PsychoPy file, but nothing is in my current ~/.psychopy2/ directory. I was wondering how I could get around this problem! Thank you.

----Solved by using different standalone version. What is the difference between PsychoPy\_2\_3 and PsychoPy\_2?

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**Author:** ![jonathan.kominsky](https://avatars.discourse-cdn.com/v4/letter/j/a587f6/32.png) [@jonathan.kominsky](https://discourse.psychopy.org/u/jonathan.kominsky)\
**Post date:** [October 12, 2018, 7:24pm UTC](https://discourse.psychopy.org/t/psychopy-installation-problem/5504/2 "2018-10-12T19:24:43Z")

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PsychoPy\_2\_3 uses Python 3.6 as its underlying python version. Regular PsychoPy2 uses Python 2.7.