Gerolt told me to get a Materia-enchanted Erudite's Picatrix of Healing with two Savage Might Materia III, so I went and spent pretty much all of my gil and bought one. I then returned to Gerolt and to my dismay I couldn't turn the quest in.

I then spoke to him about the quest and he claimed I needed a 'Erudite's Picatrix of healing with two Quicktongue Materia III melded to it' so then I did a quick google and the guide I found says I require a Picatrix of casting...the hell is going on?