First time failiure with PortableRemoteObject.narrow(), but

[bdturne]

I am haivng an interesting problem.
I have deployed an EJB called "EJBTest" with no jboss.xml file (so it is bound under "EJBTest" in my JNDI server).
I am then trying to call it from an external Web Container (JRun v3.1).

The first time I try to call it, I get an error when I try to PortableRemoteObject.narrow() it to the correct class - but if I simply try again, it works from them on ?

From this, has anyone seen anything similar / know what the problem might be ?

Incase it's of any use, I enclose the code below.

Cheers,
Ben

TestBean.class :
----------------
import java.rmi.RemoteException;
import javax.ejb.*;

public class TestBean implements SessionBean
{
private SessionContext ctx;

public void ejbCreate()
{}
public Integer getDouble(Integer value)
{
System.out.println("Got request to double " + value.intValue());
return new Integer(value.intValue() * 2);
}
public void ejbActivate()
{}
public void ejbPassivate()
{}
public void ejbRemove()
{}
public void setSessionContext(SessionContext ctx)
{
this.ctx = ctx;
}
}

Test.class
----------
import java.rmi.RemoteException;
import javax.ejb.*;

public interface Test extends EJBObject
{
public Integer getDouble(Integer value) throws RemoteException;
}

TestHome.class
--------------
import javax.ejb.*;
import java.rmi.RemoteException;

public interface TestHome extends EJBHome
{
public Test create()
throws CreateException, RemoteException;
}

The relavant bit of code from the servlet :
-------------------------------------------
try {
out.print("Getting Initial Context...");
initial = new InitialContext(ejbEnv);
out.println(" Done.");
out.print("Getting Home Interface of Test Bean...");
Object objRef = initial.lookup("EJBTest");
testHome = (TestHome) PortableRemoteObject.narrow(objRef, TestHome.class);
out.println(" Done.");
out.print("Getting Remote Interface of Test Bean...");
test = testHome.create();
out.println(" Done.");
Integer twentyOne = new Integer(21);
out.print("Calling the EJB 'getDouble' method on " + twentyOne + "...");
Integer fourtyTwo = test.getDouble(twentyOne);
out.println(" Got " + fourtyTwo + ".");
} catch (Exception ex) {
out.println("Failed !!!" + ex.getMessage() + "Stack Trace :");
ex.printStackTrace(out);
}

ejb-jar.xml
-----------
<?xml version="1.0" encoding="UTF-8"?>

<ejb-jar>
EJB Test Bean
<display-name>Test EJB</display-name>
<enterprise-beans>

<ejb-name>EJBTest</ejb-name> TestHome
Test
<ejb-class>TestBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>

</enterprise-beans>
</ejb-jar>