I started a new play through of my game, thinking maybe it was just a save file error. When I got the recipe book, it worked for a while, then just stopped. Same problem as always, all items except currency are 0, even if I have those items. It could be one of two things, here is my hypothesis: Yanfly's Item core could be the problem, as it changes items, and (sometimes) glitches gear. I have not tested it yet, but we can know for sure if we disable item core, start a new game, and see if we can craft items throughout various areas and playtime's of the game.