I can not build the Congress

[Oro]

After I conquered (as Koinon Hellenon) Pergamon, I get the opportunity to build a congress. But it makes no progress, it is always at 0%. Am I encountered a bug? :sweatdrop:

[MIKE GOLF]

I believe that KH can only build one congress building, after that other options open up for the player.

[Elzeda]

Try building it in Korinthos. The scripting for the reforms seems to indicate that's where it needs to be.