Sounds good. Those pesky civilian colony ships just started delivering colonists to a planet I was using as a stockpile for infrastructure. How much infrastructure should be needed for a colony, even of just a couple million, on a planet listed as N/A? Or, maybe constructing something called "Outpost" to house 50K on a terrestrial planet that is N/A? Just a thought to maximize the reality of accurately showing the spread of a population through a solar system.
I see the problem now. The civilian ships look for colony locations with colony cost 0 or enough infrastructure. I hadn't considered a situation with infrastructure on a planet listed as "N/A", which was picked up as a negative col cost. I have fixed that for v3.2 as well.
N/A planets cannot have any actual people because they are completely unsuitable for colonization. This applies to gas giants and planets with very high or very low gravity. You can still place a colony site on a rocky planet with a "N/A" col cost and you can add automated mines, tracking stations, PDCs, etc, you just can put any colonists there, which in turn means any manned installations will be useless on that planet. The basis for this is that you might have artifical gravity in a PDC or the for the crew of a tracking station, but you can't do it for a significant number of people.
Steve