error unmarshalling arguments

I have written an RMI application I have completed all the steps but I am stuck when I start the server. By issuing the following command on the prompt:

C:> java 朌java.security.policy=java.policy FileServer

I get the following error message:

File Server: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:

java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:

java.lang.ClassNotFoundException: FileImplement_Stub

I tried my best to solve it but failed?Sir, how can I solve this problem?

[600 byte] By [haideralikhalila] at [2007-11-26 18:38:55]