Picking the level 3 cleric spell "Greater Acid Resist" actually gives you "Greater Shock Resist"
I found a bug while trying to prepare my party to fight the Babaus in the cave.
I gave both my clerics what i'm sure was Greater Acid Resist on their level ups, but when the battle started it appeared i'd picked greater shock.
This one just came back to haunt me as I just fought a young Green Dragon and only had shock resist!