[Java Rmi] Eccezione IIOP

[stedona]

ciao a tutti

ho un problema con l'uso del protocollo iiop mi esce questa eccezione
qualche suggerimento?

Exception in thread "main" javax.naming.NameNotFoundException [Root exception is org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0]
at com.sun.jndi.cosnaming.ExceptionMapper.mapException(ExceptionMapper.java:44)
at com.sun.jndi.cosnaming.CNCtx.callResolve(CNCtx.java:484)
at com.sun.jndi.cosnaming.CNCtx.lookup(CNCtx.java:523)
at com.sun.jndi.cosnaming.CNCtx.lookup(CNCtx.java:501)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at clientuser.ClientIIOP.main(ClientIIOP.java:57)
Caused by: org.omg.CosNaming.NamingContextPackage.NotFound: IDL:omg.org/CosNaming/NamingContext/NotFound:1.0
at org.omg.CosNaming.NamingContextPackage.NotFoundHelper.read(NotFoundHelper.java:72)
at org.omg.CosNaming._NamingContextExtStub.resolve(_NamingContextExtStub.java:406)
at com.sun.jndi.cosnaming.CNCtx.callResolve(CNCtx.java:470)
... 4 more

grazie anticipatamente