.please heip me ! try to deloy petstore have java.lang.ref

[worsewei]

I am trying to deploy petstore !
In winxp every thing is ok !
but ,in linux I got this exception!
I use jboss 3.0.8. postgresql 7.3.3 !

ERROR [org.jboss.deployment.MainDeployer] could not start deployment: file:/usr/local/jboss-3.0.8/server/xpetstore/deploy/xpetstore-ejb.ear
org.jboss.deployment.DeploymentException: Cannot construct Factory : com.opensymphony.module.sitemesh.factory.DefaultFactory: java.lang.reflect.InvocationTargetException; - nested throwable: (com.opensymphony.module.sitemesh.factory.FactoryException: Cannot construct Factory : com.opensymphony.module.sitemesh.factory.DefaultFactory: java.lang.reflect.InvocationTargetException)
at org.jboss.jetty.Jetty.deploy(Jetty.java:353)
at org.jboss.jetty.JettyService.performDeploy(JettyService.java:242)
at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:301)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:814)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:806)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:627)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:591)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)

[bbbbb]

I have the same problem, but on windows xp.
Can you tell me what the problem was afterall?