If you are a new player to this mod, check out the New Player Guide[docs.google.com]!

See also our Reference Manual[github.com] for more details.

If you are having problems, try ending Crusader King 2 program, then remove your Princes of Darkness cache folder and its contents, probably located at someplace like: C:\Users\YOURUSERNAME\Documents\Paradox Interactive\Crusader Kings II\princesofdarknesscache

This is particularly important to do after a steam update to the mod.

If you are still having trouble, take a look at your error log and tell us what it says towards the end. It should be located at something like: C:\Users\YOURUSERNAME\Documents\Paradox Interactive\Crusader Kings II\logs\error.txt

If you are still having problems, try running this mod without any other mods.