EDIT: Forgive me. I got everything worked out now.
This seems the most relevant place for this so:
I've followed the tutorial in the scriptorium here
Code:
http://www.twcenter.net/forums/showthread.php?t=82304
I've done everything correctly, even using the descriptions and pack files from BI so I don't have to copy or make my own from Rome. However when I play the game I still get the Roman army barracks image in the building queue. Everything else seems to be working fine.
How can I fix this? (image below)
I can't find the barbarian city with stone walls for the campaign map in the BI folder. I get this when the walls are complete: