I've been building an Inquisitor to go into HellKnight Enforcer, and noticed first off that I wasn't elegible to take the Warrior Priest feat from Ultimate Magic, which is a prerequisite feat for HellKnight Enforcer. I had taken my Domain, and as an Inquisitor can cast Level 1 Divine Spells.
When it came to taking the actual prestige class, while it shows in the list does not show as a class I meet the prerequisites for. The only prerequisite I am missing is the 'Slay a Devil with greater hit dice than yourself, in front of a HellKnight'.
I noticed that in both these cases, the requirement is for the class includes being a Divine Spellcaster. Is it possible that these two options are not counting Inquisitor as a class capable of casting Divine Spells?
Anonymous