Hello, its a stand alone so its quit hard for me to update. But do you think that has would have any effect? I have bought some other plugins recently and they seem to work fine.
Updating could potentially help, for sure. Can you check for any log files in "~/Library/Application Support/PreSonus Software/Studio One 3"? They might reveal why the plugin doesn't load.
I am on holiday now but will check when I get back home.