Checked them out. Didn't encounter any error codes or anything like that. Anything in particular you'd like us to look at?
I really like the Zapotecs. I think Mayans would make a great addition to Terra Magna as well (preclassic and early classic fit into the game's timeline, with plenty of awesome architecture). Incas and Aztecs can go into Millennium AD (and they all can be combined into the official game, under a new release "0 A.D. - Epochs", coming soon in 2025!).