I have ahd that problem myself. Are you using Win 7? or 10? I should check and see if it will work for me now that I have Win 10.
Also I see in the upcoming patch (currently on the “3xperimental” branch on Steam) that there is some kind of fix for Exocraft not spawning if the dish is built within the base limits.
3xperimental - #190 by SingularGleam Click on summary.
Good luck!
oh, and welcome to the forums! 