CD collection example: failed to load jboss.xml.

I am playing with the CD collection example, as explained in Chapter 3 in the 
documentation sources from CVS. 
I created the ejb packaged in cd.jar and I deployed it into jboss-3.1alpha (and 
also 3.0.0) running on Linux RH 7.3,
with JDK 1.4.0. I got this error: 

02:44:06,769 ERROR [XmlFileLoader] failed to load jboss.xml.  There could be a 
syntax error.
org.jboss.deployment.DeploymentException: Error in jboss.xml for Bean CDBean: 
configuration '' not found in standardjboss.xml or jboss.xml
        at 
org.jboss.metadata.ApplicationMetaData.importJbossXml(ApplicationMetaData.java:583)

The <configuration-name> element is empty (as shown in the jboss.xml example 
given in chapter 3). 

Any clue on what is going on ?

The jboss.xml file is:
<?xml version="1.0" encoding="Cp1252"?>

<jboss>
    <secure>false</secure>
    <container-configurations />
    <resource-managers />
    <enterprise-beans>
        <session>
            <ejb-name>CDCollectionBean</ejb-name>
            <jndi-name>cd/CDCollection</jndi-name>
            <configuration-name></configuration-name>
        </session>
        <entity>
            <ejb-name>CDBean</ejb-name>
            <jndi-name>cd/CD</jndi-name>
            <configuration-name></configuration-name>
        </entity>
    </enterprise-beans>
</jboss>

Thanks,
-- 
Pablo Pita Leira
IT Consultant, Physicist, MSc
http://www.pitagoral.com
Tel. +49 69 60504293
Mobile: +49 173 7941704



-------------------------------------------------------
This sf.net email is sponsored by:ThinkGeek
Got root? We do.
http://thinkgeek.com/sf