Mapping Error

Mapping Error

After being away for a few years i have chosen to come back to S3. As i did in the past i wish to make maps again. I have come upon a problem i can't seam to solve.

When i try to make a map it's all ok until i try to place a building or settler on it. I then get this error:

Error: You cannot mix up the setups of buildings for each player! Either you set up buildings, settlers and piles for each player or you don't set any building/settler or pile. Both is allowed, but not mixed up.

I know there is a way to fix this but i don't remember how.
Is there someone out there who can help me please. It would be very much appreciated.

Please disregard this post. After a lot of playing around with this i finally figured out what the problem was and fixed it.