Fails to load with Solar System++, which does not remove any base planets, but seems to affect map generation settings since it can swap them out.
https://imgur.com/C8RoY8Z

I just load that mod to investigate. That mod wipes map gen settings which I did not expected it to be wiped. Start up error can be fix easily. But when starting planet is not on nauvis, it'll cause many other issues. My mod functions depend on nauvis to act as default planet.

A proper fix will not be a small task. I'll try to find a solution in a feature release.