This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Now the problem is not with all that code. The problem is with your script.
CLASSPATH is probably the problem. The client, server and RMI Registry all need access to the classes.
For local testing it is easiest to have every class on the CLASSPATH.
Then when all is working, you can separate classes.