I have installed Dark Planet on my Mac and registered it with stein berg. It has been successfully validated in Logic Pro X AU presets manager and successfully registered with the soft E-licenser.
When I open Logic and create new instrument Dark Planet does not show up in my available choices. I can see the component in my component folder and the VST 3 in my VST folder. I had the demo before in an earlier version of Logic and it worked fine.
I have tried numerous times. I am running Logic 10.7