I'm trying to understand this mod a bit more and while doing that, I played some of the main campaign with the Rebel Alliance. After the first mission, there was two unfamiliar space build icons. I activated them thinking it was just a new station icon design. Once both were built, there was nothing left to build. I did this for each of the planets available to me and not one provided buildable space units. I then tried it for the Empire without any problems. What gives?