I've been having trouble getting any application to access the bean on
the JBoss Server. It always comes up with the error below. Java files
and .xml files are also included. If someone could give some
suggestions, it would be much appreciated as I'm at the end of my
tether.

It looks like something is wrong with the XML file, but what?

- JDK 1.4 Beta 2
- JBoss 4.0.0DR2
- EJB Installs correctly in jboss, the problem occurs when trying to
run the client

Exception
=========

FATAL [main] (ClientServiceMBeanSupport.java:76) - Could not set up
mbean server or mbeans in client
javax.management.MBeanException: Exception thrown in the MBean's
constructor
       at com.sun.jmx.mbeanserver.MBeanInstantiatorImpl.instantiate(MBeanInstantiatorImpl.java:259)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(DefaultMBeanServerInterceptor.java:298)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.createMBean(DefaultMBeanServerInterceptor.java:207)
       at com.sun.jmx.mbeanserver.JmxMBeanServer.createMBean(JmxMBeanServer.java:405)
       at org.jboss.system.client.ClientServiceMBeanSupport.internalReadResolve(ClientServiceMBeanSupport.java:71)
 <snip>
       at java.rmi.MarshalledObject.get(MarshalledObject.java:135)
       at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:30)
       at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:522)
       at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:479)
       at javax.naming.InitialContext.lookup(InitialContext.java:347)
       at InterestClient.main(InterestClient.java:44)
Caused by: org.jboss.mx.util.JBossNotCompliantMBeanException: Error
parsing the XML file:
       at org.jboss.mx.metadata.JBossXMBean10.build(JBossXMBean10.java:117)
       at org.jboss.mx.metadata.XMLMetaData.build(XMLMetaData.java:270)
       at org.jboss.mx.modelmbean.XMBean.<init>(XMBean.java:214)
       at org.jboss.mx.modelmbean.XMBean.<init>(XMBean.java:240)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
       at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
       at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
       at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
       at com.sun.jmx.mbeanserver.MBeanInstantiatorImpl.instantiate(MBeanInstantiatorImpl.java:234)
       ... 42 more
Caused by: javax.management.RuntimeOperationsException: Exception
occured in ModelMBeanOperationInfo constructor
       at javax.management.modelmbean.ModelMBeanOperationInfo.<init>(ModelMBeanOperationInfo.java:278)
       at org.jboss.mx.metadata.JBossXMBean10.buildOperationInfo(JBossXMBean10.java:353)
       at org.jboss.mx.metadata.JBossXMBean10.buildMBeanMetaData(JBossXMBean10.java:221)
       at org.jboss.mx.metadata.JBossXMBean10.build(JBossXMBean10.java:108)
       ... 50 more
Caused by: java.lang.IllegalArgumentException: Invalid descriptor
passed in parameter
       ... 54 more
javax.naming.CommunicationException [Root exception is
java.io.InvalidObjectException: Problem setting up mbean server o
r mbeans in client: javax.management.MBeanException: Exception thrown
in the MBean's constructor]

<Same as first above>

EJB-JSP.xml
============

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise
JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">

<ejb-jar>
    <description>jBoss test application</description>
    <display-name>Test</display-name>
    <enterprise-beans>
        <session>
           <description>Models a music CD collection</description>
            <display-name>JBoss Management EJB (MEJB)</display-name>
            <ejb-name>Interest</ejb-name>
            <home>com.web_tomorrow.interest.InterestHome</home>
            <remote>com.web_tomorrow.interest.Interest</remote>
            <ejb-class>com.web_tomorrow.interest.InterestBean</ejb-class>
            <session-type>Stateless</session-type>
            <transaction-type>Container</transaction-type>
        </session>
    </enterprise-beans>

</ejb-jar>

jboss.xml
=========

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.0//EN"
"http://www.jboss.org/j2ee/dtd/jboss_3_0.dtd">

<jboss>
 <enterprise-beans>
   <session>
     <ejb-name>Interest</ejb-name>
     <jndi-name>interest.Interest</jndi-name>
   </session>
   <secure>false</secure>
 </enterprise-beans>
</jboss>

interest.java
=============
package com.web_tomorrow.interest;
import javax.ejb.EJBObject;
import java.rmi.RemoteException;

public interface Interest extends EJBObject
{

public double calculateCompoundInterest(double principle,
 double rate, double periods) throws RemoteException;
}

interestBean.java
=================

package com.web_tomorrow.interest;
import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;

public class InterestBean implements SessionBean {

 public double calculateCompoundInterest(double principle,
   double rate, double periods) {
   System.out.println ("Someone called
`calculateCompoundInterest!'");
   return principle * Math.pow(1+rate, periods) - principle;
 }


 public InterestBean() {}
 
 public void ejbCreate() {}

 public void ejbRemove() {}

 public void ejbActivate() {}

 public void ejbPassivate() {}

 public void setSessionContext(SessionContext sc) {}
}

InterestHome.java
=================

package com.web_tomorrow.interest;
import java.io.Serializable;
import java.rmi.RemoteException;
import javax.ejb.CreateException;
import javax.ejb.EJBHome;

public interface InterestHome extends EJBHome {

 Interest create()
   throws RemoteException, CreateException;
}