I suffered from this bug, and I was told that if you save and reload the game before building the starbase, then the bug is fixed. I didn't actually test it since I had already built a non-mining starbase on the resource, but you may want to test it yourself.
Thanks!
In my recent game, I replaced the constructors with a faster ship that has constructor modules, and I obsoleted the original constructor. I then discovered that I cannot actually build new mining starbases anymore - the new ships (Builders) will not automatically build a starbase when they hit the resource, and if I choose "construct", then I'll only get the regular menu of influence/military/economy starbases. I think I'm totally blocked out of building mining starbases, unless I'm m
Stardock Forums
GalCiv2 Forums