I don't know. Did you place any blocks inside the structure other than the ones shown in the book before you added the runes necessary for the crafting? If you add any runes before you build the actual structure, it might not work- the video was saying something about that. Also, it would be nice if there was some way to get useful debugging information regarding these structures from an item in the mod itself. I'd suggest either adding this functionality to the Manipulator or adding a new item to do it, similar to Blood Magic's Divination Sigil.