Just tried to install ProRender for Maya on Mac Mojave running Maya 2018. The plugin does not show up in plugin manager. I've tried several times using different RPR versions, including the latest 3.2.1, uninstalling and resetting Maya preferences before every attempt.
This post comes closest to my issue: https://community.amd.com/t5/radeon-prorender-discussion/prorender-for-maya2018-5-mac-os-10-14-insta...
but no resolution was offered there either. Anyone?
