It crashes when trying to enter the renaissance era.

"Firaxis was willing to consult with the Pueblo Council to determine the most realistic way of portraying the Pueblo civ, but the Pueblos drew a hard line at the language. To the Pueblo people, their language is sacred. They viewed inclusion of the language in a video game as a form of desecration, similar to how many native people do not wish to be photographed." https://www.polygon.com/features/2013/6/27/4453070/civ-the-making-of-brave-new-world

To be fair, the Pueblo asked for their language to not be in the game - which would have been necessary with Firaxis making the mod, but not with a static 2D leader in a mod