[jboss-user] [Installation, Configuration & DEPLOYMENT] - Fail to boot jboss

I am getting the error as follows when running run.bat of JBoss: Failed to boot JBoss: org.jboss.deployment.DeploymentException:could not initialise deployment :file:/c:/Documents and Settings/RAVI/Desktop/jboss-4.0.3SP1/server/default/conf/jboss-service.xml; -nested throwable:(java.lang.NoClassDefFoundError: EDU/oswego/cs/dl/util/concurrent/ConcurrentReaderHashMap) Why this error occurs? what I have to do for it to be resolved? Anybody Please help. It's urgent thanks................. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4150701#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...