So I finished the ride to the tower and saved as soon as I stood before it, with the wagon just a short distance away. The first time I did this I clicked the hand on the wagon and Graham went in. I didn't know what to do after finding the key and died.
Ok, no biggie -- that's not my problem.
The problem is that I restored my game and now... I can't get back into the wagon. I start off right where my saved game was, but now I click on the wagon and the narrator keeps saying "'Tis beyond his reach!" or somesuch. I click around everywhere, but it's a no-go. Makes no sense. Any ideas why I'm no longer able to go in?