New 3.0.2 Installation problem

[ryanjoe]

Just installed JBoss and clicked run.bat and got this:19:37:57,930 ERROR [Server] start failed
org.jboss.deployment.DeploymentException: Exception getting document; - nested throwable: (java.lang.SecurityException: sealing violation)
at org.jboss.deployment.SARDeployer.parseDocument(SARDeployer.java:635)
at org.jboss.deployment.SARDeployer.init(SARDeployer.java:150)
at org.jboss.deployment.MainDeployer.init(MainDeployer.java:668)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:604)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:580)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:564)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:324)
at org.jboss.system.server.ServerImpl.start(ServerImpl.java:221)
at org.jboss.Main.boot(Main.java:142)
at org.jboss.Main$1.run(Main.java:375)
at java.lang.Thread.run(Thread.java:484)
+ nested throwable:
java.lang.SecurityException: sealing violation

Can anyone help me - I thought that this worked 'out of the box'

[adrian.brock]

You don't show the "nested throwable".

A sealing violation means something is trying
to add a class to a package that is already
defined in another "sealed" jar.

This is probably something to do with crimson.jar in
${jboss.dist}/lib.

Do you have something in jre/lib/ext or ${jboss.classpath}
that might be breaking the sealing?

Regards,
Adrian