G'day Folks,

I've started to play GalCiv III recently (including Crusade and Retribution DLC). I'm starting to get a hang of most of the sub-systems. Promotion still has subtleties that elude me though.

I'm playing a custom synthetic race if that matters.

I can promote administrators and scientists. I cannot promote celebrities. The promotion button is grayed out.

I was given a couple of celebrities as part of tech research. So far so good. I have both promethium and harmony crystals -- the two listed required ingredients for Galactic Tour. I've tried promotion while unassigned and when that failed assigned one of the celebrities to a colony and tried from there. No change; the button is still grayed out.

Any ideas?