I was playing MOO2 tonight and ran across something that I've never quite understood. Occasionally, when I move a colonist from one planet to another, I get a message that "there are no more slots for that occupation." For example, tonight I moved a worker from a housing planet to my big planet in that system and tried to switch him to a farmer (by just dropping him in among the farmers). Got the message. Then I dropped him into the workers, picked him up again and dropped him in with the farmers. Didn't get the message.
What gives with the "no more slots" message?
What gives with the "no more slots" message?