I've gone further in this game than I ever have in previous X games, and even in TC, I completed the player HQ plot, the Hub plot, as well as a whole heap of other achievements, including capping the #deca before it was patched out.
In this play-through of AP, and I've committed many hours in the last 4 weeks, I've completed the Argon plot, the player HQ plot, built a massive empire, amassed a huge amount of ships including capping a number of pirate capitals in preparation for capping Xenon ships.
I actually have my 200+ marines all training up while I do other stuff, and thought that i'd run through the AP Hub plot for the first time.
So I get to a point and see this message: