Psychopy can't run on mac due to versions conflict?

[Michael]

This isn’t anything to do with there being other versions of Python installed. The standalone version of PsychoPy is exactly that: it stands alone, and contains its own version of Python, which is what will be used when you push the green “run” button. Try this:

Multiple users are having problems with libraries

Sorry to hear that this caused a problem for a classroom (or at all!) There was a persistent and nasty packaging problem with one of the sound libraries (it kept looking like it was fixed but then broke again). I’m pretty confident it is now fixed in the 3.0.0b9 beta release so your students could try that or alternatively tell PsychoPy to use a different sound lib by changing the application preferences to this: ['pyo', u'sounddevice', u'pygame', ] or even just ['pyo'] rather than: [u'so…