I don't know if this problem is unique to me or what, but for some wierd reason I cannot upgrade my starbases. Even after I research module after module, there are no upgrade module options given in the menu of the starbase I select. Did I forget to research a vital tech!? Is there something I'm missing here?

Thanks Stardock, your support staff has been unbelievable so far; any help you can give me would be greatly appreciated.
--The_Commentator