About half the time when I'm playing as Horatio and reach part 3-2 "A Fly in the Ointment", the planet that I need to investigate doesn't exist. A marker is placed in empty space, and neither probes nor techs reveal a system there. It seems to only happen if I've colonized everywhere in my starting constellation, and it happens about half the time I've done so.
Has anyone else had this problem?

Hello Looksy. 

Do you have a save ? I would be able to investigate :)