This week's book giveaway is in the Agile and other Processes forum. We're giving away four copies of The Mikado Method and have Ola Ellnestam and Daniel Brolund on-line! See this thread for details.
My gut tells me you should get something like a incompatible version exception. However, I just tried it on some sample RMI code running in different directories on the same computer and it connected fine.