[PyMOL] How to assign .pse files to the OSX PyMOL app?

[Michael Bovee]

Hi,
I want to assign my pymol sessions to automatically open using the new 
OSX-native pymol 0.93, but I cannot select the app from GetInfo > 
OpenWith.  It is greyed-out. Is there a command line way to do this?

thanks,
--Michael