I have recently installed jboss-4.2.3.GA in my system (Windows-XP SP2). I have been using jboss for a while now. My previous version of jboss-4.0.3 runs fine on my machine. I have a jdk150_12 installed on my computer and my JAVA_HOME is set to that. After unzipping the jboss-4.2.3 binary, i started up the default server by issuing run.bat command. I saw lot of errors in my server.log, I can't even access the jmx-console. I am sure the server didn't come up properly. I got several errors. I am listing them one by one here. 2008-10-12 21:24:13,656 ERROR [org.apache.tomcat.util.modeler.BaseModelMBean] Exception invoking method addChild java.lang.NoClassDefFoundError: javax/annotation/Resource 2008-10-12 21:24:13,672 ERROR [org.apache.tomcat.util.modeler.BaseModelMBean] Exception invoking method init javax.management.RuntimeErrorException: Error invoking method addChild Caused by: javax.management.RuntimeErrorException: Error invoking method addChild and MORE....... All of these errors are seems to caused a missing class javax/annotation/Resource. Is this a known bug or is it something to do with my JDK. Can someone help me here. Thanks Venki View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4181739#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...