Captain Plugins works perfectly fine on my Mac (OSX Mojave) and up-to-date Logic.
When I tried Orb Producer last night, on the other hand, I immediately ran into a significant bug in both the AU instrument version and the VST version, which I ran through Blue Cat's Patchwork MidiFX plugin. (NOTE: there is no Orb Composer MidiFX AU. The AU is a regular instrument, which plays a built-in synth.)
I could set up the OrbChords plugin OK, but when I then added the OrbBass plugin, it caused the OrbChords to run in quarter time. In other words, although the whole point of the plugins is supposed to be coordination between the four, there are timing coordination issues the render them unusable.
I'm not such a bitter, jaded person that I'm swearing them off forever; I'll give the OrbProducer Suite demo another try when (if?) they fix this fundamental bug. But it certainly did not make a good first impression that they released it with such a fundamental issue.