Nope, there are no errors in the game or in the logs, all is loading up fine.
Im sure its a python error somewhere, do you know where the religious screen is located, is it Customeventsmanager?
What the screen shows are the religions at the top as normal, but where your cities are meant to be with whether they have relion or not is not there, plus it has cancel on the bottom of the screen instead or exit, which it does not do, you have to press Esc to get out.