I am getting following after installing JBoss Portal and trying to restart JBoss; any pointers on how to resolve this?

4:28:41,593 INFO [WebService] Using RMI server codebase: http://E409050:8083/
14:28:43,156 INFO [NamingService] Started jndi bootstrap jnpPort=1099, rmiPort=1098, backlog=50, bindAddress=/0.0.0.0, Client SocketFactory=null, Server SocketFactory=org.jboss.net.sockets.DefaultSocketFactory@ad093076
14:29:04,500 ERROR [MainDeployer] could not create deployment: file:/C:/download/jboss-4.0.2RC1/jboss-4.0.2RC1/server/default/deploy/jboss-portal.sar/
org.jboss.deployment.DeploymentException: - nested throwable: (java.lang.reflect.UndeclaredThrowableException)
at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:143)
at org.jboss.system.ServiceController.install(ServiceController.java:200)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)


Thanks!