Kiya...
I had no problems with it, and I can't help wondering if that is because I used drag & drop to give the Rune to the ghost. He says you are supposed to give it to him but doesn't take it from you.
Might that make the difference?
Grasping at straws here, I know <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />