post your stragies do you play as a colonial power or move to conquer ibellica? do you get friendly with the pope or you just dont care about him?
for me i conquered most of the north coast of ibellica and then started sending armies to mesocala,the pope is friendly with me just because the only mission he give me is to convert the populace of the settlements.
but when he gives me a crusade i never join.
(all crusades and jihads go to constatium why all the hate to the romans?)