In Myst ME, I made it all the way though, but the vault with the page for Dunny wont open, I believe I am doing it correctly, and other forums have said there is a script error in some versions that cause this. Not extremely imporatant, just seeking closure?any ideas?

Make sure that all 8 marker switches are "on". (They need to be to find the clues to the ages) Then turn the one on the dock "off".

The instructions you find for opening the vault in the game are indeed incorrect, and after 12 years the note still hasn't been changed to reflect the actual directions. It's not so much a script issue as it is one of a note in the game being wrong .