I found a bug.... If you try to convert an asteroid into a planet in a system with a Ring or Sphere world you'll get a message saying that it's not allowed because there's no star in the system!
Sure its obvious the star has been negated by the ring/sphere world (though a ring world should have no effect on the star since there are plenty of other directions for the light to escape through to the rest of the system), but why does it stop you from making a planet out of an asteroid field?
I still think it should let you build the planet, what does the light from the sun have to do with squishing a lot of asteroids into one big planetoid?
RAYNOR - Thanks, We didn't even know the museum was there, we were just driving through South Island and I noticed a P-51D parked on the side of the road!
The conscept is that you are in a sense doing the gensis project when you create a planet. the factures for the gensis project is a sun to substain life and the raw elements to make that life. since your ring world goes around the star, it can no longer provide for anything outside the ringworld, therefore life can ot be created.