Right, so I made a ranger 1/cleric 16/hospitaler 2 on this mod:
http://www.dungeonsofdestiny.com/
I don't recall having an option with hospitaler to choose my caster class to progress, but anyway my intention was to progress the cleric.
According to the description, hospitaler gets caster lvls at level 2, so with 16 cleric levels, 2 hospitaler levels, and 19+ wisdom I should be able to cast lvl 9 spells (total cleric caster lvl of 17).
I cannot cast lvl 9 spells, stuck on lvl 8 spells.
I'm guessing either the hospitaler bonus caster lvls flat out don't work, or they go off the 1st divine class taken in the character build rather than going off of the divine caster lvl of the players choice.
Thanks.