Overall the event raised £275,000 for the Multiple Sclerosis Society Scotland, with other big money items being a tour of an LA film studio and a holiday on a private island.
The castle was transformed for the event into a spooky Celtic banquet with fire-eaters, pipers and burning torches.
JK is expected in London on Sunday for the world premiere of Harry Potter and the Chamber of Secrets at the Odeon Cinema in Leicester Square.
If you want see the stars arrive, click on the Harry Potter link on the right hand side on Sunday to see the webcast from 2.30pm