NAG Kum [http://community.jboss.org/people/nk_2010] replied to the discussion "Error working wih EJB3, Struts2 & JBoss 4.2GA" To view the discussion, visit: http://community.jboss.org/message/537984#537984 -------------------------------------------------------------- Hi Wolfgang, I was busy other task, sorry for late response.. My JNDIView shows as below - +- PaymentAdmin (class: org.jnp.interfaces.NamingContext)   |   +- AuthenticationBean (class: org.jnp.interfaces.NamingContext)   |   |   +- local (proxy: $Proxy146 implements interface com.tarangtech.mtg.authentication.ejb.AuthenticationLocal,interface org.jboss.ejb3.JBossProxy)   |   |   +- remote (proxy: $Proxy144 implements interface com.tarangtech.mtg.authentication.ejb.AuthenticationRemote,interface org.jboss.ejb3.JBossProxy)   +- UILConnectionFactory[link -> ConnectionFactory] (class: javax.naming.LinkRef) And here is my code below -             ctx = new InitialContext();             Object obj = ctx.lookup("PaymentAdmin/AuthenticationBean/remote");             AuthenticationRemote auRem = (AuthenticationRemote)obj; *Exception* - javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.ejb3.remoting.BaseRemoteProxy; local class incompatible: stream classdesc serialVersionUID = -2711693270411201590, local class serialVersionUID = 1126421850898582900]     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:723)     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:588)     at javax.naming.InitialContext.lookup(Unknown Source)     at Main.main(Main.java:13) Caused by: java.io.InvalidClassException: org.jboss.ejb3.remoting.BaseRemoteProxy; local class incompatible: stream classdesc serialVersionUID = -2711693270411201590, local class serialVersionUID = 1126421850898582900     at java.io.ObjectStreamClass.initNonProxy(Unknown Source)     at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)     at java.io.ObjectInputStream.readClassDesc(Unknown Source)     at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)     at java.io.ObjectInputStream.readClassDesc(Unknown Source)     at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)     at java.io.ObjectInputStream.readClassDesc(Unknown Source)     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)     at java.io.ObjectInputStream.readObject0(Unknown Source)     at java.io.ObjectInputStream.defaultReadFields(Unknown Source)     at java.io.ObjectInputStream.readSerialData(Unknown Source)     at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)     at java.io.ObjectInputStream.readObject0(Unknown Source)     at java.io.ObjectInputStream.readObject(Unknown Source)     at java.rmi.MarshalledObject.get(Unknown Source)     at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:653)     ... 3 more What's wrong here? Please assist me .. Thanks, Nagesh -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/537984#537984] Start a new discussion in EJB 3.0 at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]