I get NoClassDefFoundError when I attempt to start up a JBoss service packaged into an EAR file. There is no WAR file in this application as there is no web interface. I get this error even if I put my JAR file into the server/default/lib directory. Yes, the JAR does indeed contain the .class file JBoss says no definition exists. I did this: * created a JBoss service * I packaged all the Java class files into a JAR file * I put this JAR file into the EAR file's lib/ directory * The ear has a manifest Class-Path entry pointing to the jar * I added a jboss-app.xml file to the EAR file (below) * I added an application.xml file to the EAR file (below) * I created a SAR file that contains the same manifest entry * In the SAR file I added a jboss-service.xml file (below) * I put the SAR file in the EAR file jboss-app.xml: | <?xml version="1.0" encoding="UTF-8"?> | <!DOCTYPE jboss-app PUBLIC "-//JBoss//DTD J2EE Application 1.4//EN" "http://www.jboss.org/j2ee/dtd/jboss-app_4_0.dtd"> | <jboss-app> | <loader-repository>verisign.submanager:loader=submanager.ear</loader-repository> | <module> | <service>submanager.sar</service> | </module> | </jboss-app> jboss-service.xml: | <?xml version="1.0" encoding="UTF-8"?> | <!DOCTYPE server PUBLIC "-//JBoss//DTD MBean Service 4.0//EN" "http://www.jboss.org/j2ee/dtd/jboss-service_4_0.dtd"> | <server> | <loader-repository>verisign.submanager:loader=submanager.sar</loader-repository> | ... | application.xml | <?xml version="1.0" encoding="UTF-8"?> | <!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.2//EN" | "http://java.sun.com/j2ee/dtds/application_1_2.dtd"> | <application> | <display-name>VeriSign Subscriptions Manager</display-name> | <description>VeriSign Subscriptions Manager</description> | <module> | <ejb>submanager.sar</ejb> | </module> | </application> | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4214493#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...