The books to get to chapters 7 and 8 are side by side at the end of chapter 6, but nothing happens when I click on either one. I can get to chapter 7 from Chapter 1 by going down the path to the right of the doors, then using Boots of Walterwalking to get across to the island. The only option from there is to activate a scyre which doesn't seem to do anything, and then go back to Chapter 6. Still can't get to Chapter 8 at all. What am I missing?