having a issue were the Shalidor's Insights (Quest)(Book) isn't showing up in wolfskull cave at the top before you go down to the main part of the cave to o the other quest the man who cried wolf quest. there's no chest at all on the top first part of it just a marker so were is it i looked in the other part of the cave and can't find a marker or a chest with it so were is it at. or is this a known bug with the xbox 360 version.