I recently had a game where i discovered Deception but Esus did not found, neither did I get a Nightwatch. According to the religious advisor it had not been founded by anyone else, and when i tried to use the world builder to add a Nightwatch, spread the religion etc. nothing happened. Am I missing something, or is this a bug?
Check the Options pane of the Settings tab of the Victory Conditons (<F8>) screen, to see if CoE was disabled. If not, please post a save of your game.
