Classcastexception when accessing EJB3.0 JPA EJB

[forumer]

Using JBoss4.0.4

This is the first time I am trying to deploy a bean using EJB3.0/JPA. I get the following error. I'd appreciate any help me in getting me going with using JPA.

java.lang.ClassCastException: $Proxy162

My Bean is annotated as:

@Stateless
@RemoteBinding(jndiBinding="ABC/FMBean/remote")
public class FMABean implements FMALocal, FMARemote {
 @PersistenceContext(unitName="FM")
 protected EntityManager em ;

In the JSP I am trying to access the bean as:

InitialContext ctx = new InitialContext();
 Object obj = ctx.lookup("ABC/FMAAdminBean/remote");
 System.out.println("obj class ="+obj.getClass());
 fmaAdmin = (FMAAdminBean) obj;

JNDIView in JMX Console look like:

 +- ABC (class: org.jnp.interfaces.NamingContext)
 | +- FMABean (class: org.jnp.interfaces.NamingContext)
 | | +- remote (proxy: $Proxy147 implements No ClassLoaders found for: com.boeing.begss.fm.FMARemote (no security manager: RMI class loader disabled))
 | +- FMAAdminBean (class: org.jnp.interfaces.NamingContext)
 | | +- remote (proxy: $Proxy144 implements No ClassLoaders found for: com.boeing.begss.fm.FMAAdminRemote (no security manager: RMI class loader disabled))