45°38'N-13°47'E
Deity
I've understood what's causing it. Start a new game after clearing the cache, delete civilization.ini and you won't experience any problem. What's causing this problem is gameoptions: there are some options which are hidden and disabled. One is Divine Prophets. Another is called Infinite Xp. These options mostly come from C2C but have been disabled for gameplay reasons or because they aren't fully working. Problem is that when another option is added in the dll and in gameoptions, if you don't clear your cache and delete civilization.ini, these disabled options can be accidentally become active. That's what happened when I've added Advanced Cargo Mod: the list of options in the configuration file gets screwed if you don't reset it. Hence you end up losing one of your selected options (say Civics Buildings for example) which gets replaced by this hidden option, in this case Infinite Xp, which is not intended to work in AND.