@Face_off,

Can you try to install it?
Because if I continue with the installation I can't see any Studio installed in my Apps folder and then MODO crashes.
if I install the .135 plugin after, modo works again but can't open but octane can't launch because the license is not set up in Studio 4.
I ...

Face_off, please, see attached image.

Looks like the current OSX Studio download link is actually the plugin for MODO 902 instead of the Studio app