Hey guys,
I haven't been playing the game very long, but I started my second game today as the Terrans in Dark Avatar, and I've noticed that on all my colonies (I have 6), and even on Earth, every improvement I try and build on a green 'acceptable' tile has a completion time of "Never". I've researched the required "Xeno (X)" techs to build on my colonies, and still everything says it will "Never" be built.
I'm sure the answer must be obvious, but I'm just overlooking it. Any help for a n00b would be great. Thanks!