Adding provinces from Update Province Data doesn't add the provinces, just says ERROR. Example province from the editor program attached
EDIT: the provinces show up fine on the editor program though
EDIT2: I've updated, uninstalled, reinstalled, still same problem
EDIT3: Managed to get it to work in a roundabout way:
Step 1: Load up a different map, and exit the game with that.
Step 2: Change the NumberOfProvinces value to however many provinces you will have after adding the new ones (remember, provinces start at zero so the NumberOfProvinces = biggest ID number + 1)