Move commons-logging-1.0.4.jar from org.jboss.tools.hibernate3_6/lib/required to org.jboss.tools.hibernate3_6/lib/
Remove hibernate-jpa-2.0-api-1.0.1.Final.jar from org.jboss.tools.hibernate3_6/lib/jpa/ to org.jboss.tools.hibernate3_6/lib/