Hi. I installed this and can build the building, but it has no effect on my planetary maximum population. I am running (in load order):

volcanic cooling
diverse specials and massive planets
cheapperks - creative gives +50% research
even bigger planets
imfull
lots of planets
skyscraping

imfull works fine.

Any ideas about what may be interfering/conflicting here?

It is a mess, but unbalanced stuff is like that and can be a lot of fun for some of us

This seems like one hell of a mess but I am all for it. I'm going to try this out right now, wish me luck!