Groove Agent won't load in Cubase

I’ve searched these forums for hours and can’t find a similar issue.

I’m using Cubase 9.5 on MAC 10.13.6 and Groove Agent always worked great for me until a recent third party plugin caused me some problems, which were solved by renaming the Cubase preferences folder. I was able to open Cubase, but when I do, the place where Groove Agent was now just says “No VST Instrument” (see attached image).

I’ve tried reinstalling the software, the plugin manager path, etc and no luck. Any ideas would be much appreciated.