Corel PaintShop Pro & Nik 3 Full Compatibility

I’ve not had a problem using Nik Collection as plug-ins in Corel PaintShop Pro, including the latest version 2020. I upgraded to Nik 3 yesterday (6/4/2020) and although all the previous plug-ins still work, the new Perspective Efex does not. When launching in PSP there’s a Corel pop-up stating “Plugin returned an unknown error”.