Big Oops in Tech Tree
Extreme Colonization comes in twice
from
GalCiv3 Forums
The techs:
MasterXenoAdaptationTech
and
MasterExtremeWorldColonization
are in sequence with one another, are on all tech trees, and both change "CanColonizeExtremeWorlds" to 1
It should be removed from MasterXenoAdaptionTech, which gives you something else (I can't recall what).