First, I want to say that Jayose need to also respond to "Do you have the holy script", cause this is the name of the item (he responds only to "do you have the lost holy script").
After, I've done everything necessary for the quest until I had the Holy Script. I returned to Sharven and gave it to him. Only, I had a message saying "Sharven does not need that". It might be intentional that this happens, if yes, please tell me what I need to do. If it isn't, well it is a new bug.