I'm back. When I download your link plowman I get some 1.6.4 libraries. I actually fixed this a month ago but I don't remember how. I think I replaced the libraries folder in my launch directory with what you posted. However I am still getting the error. Am I missing something? Is there more to this? I'm using MCPC, not cauldron for 1.6.4.
Do I need a repaired server.jar too?