Hi Brian, thanks for pointing this out. I created a new Jira issue for it - http://opensource.atlassian.com/projects/hibernate/browse/METAGEN-48 As a workaround you can download the missing jar file from the JBoss maven repository: https://repository.jboss.org/nexus/content/repositories/public/org/hibern... If you have maven installed you can also build the jar file from the sources included in the bundle by running: $ mvn package I hope this helps for now. --Hardy On Mon, 15 Nov 2010 22:52:59 +0100, Brian Harris <Brian.Harris(a)morganstanley.com&gt; wrote: