Yeah, the Teleport spell was a bit buggy. Basically you get teleport, then go into a book, then leave the book and teleport is gone. Solution: Save and load or re-acquire the teleport spell. Oh well. As for hopping the gap if you did have the spell you can only cast it in the wide areas where there are 2 empty spots - if you stand on one of those little outcroppings it won't work. I have no idea why I decided to build a teleport of 3 squares but I did. The outcroppings were just there to create a cool view looking down the infinite corridor. Oh well! :)