Zero Zero Zero

[PeterD]

At about turn 150 in a solo game against 11 TDM
AI's I noticed a yellow "never" in the build
menu.

I checked the planet out and it looked normal
except the population read 0M (none).

There had been no intel attacks, no plague and
I could still access the planet, it just wouldn't
build anything. The min/org/rad totals showed
0 0 0.

Over the next few turns 4 more planets did this.
No attacks or plague's and the game isn't
limited rescource. Some of the planets had been
around a long time some were newly colonised.

Some of them were green cross planets so I guess
it wasn't bad conditions.

I built a cargo ship and sent over some
population and off it went building again.

The only change to colonisation I made was in the
settings file. Automatic col = 2 (to hurry
things along).

Is this the problem? Any help appreciated.