Since JBoss thrown/caught exceptions contain only cluttered messages, one must analyze the stacktrace itself, to give the enduser a feedback, it is able to understand.

However, this becomes even hard, since completely wrong stacktraces are thrown. E.g.:
11:35:47,456 [Thread-4] WARN (AppServerSettingsDialog.java:305) - Could not obtain connection to any of these urls: https://localhost:8443/invoker/JNDIFactory and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]
11:35:47,457 [Thread-4] DEBUG (AppServerSettingsDialog.java:307) - run
javax.naming.CommunicationException: Could not obtain connection to any of these urls: https://localhost:8443/invoker/JNDIFactory and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out] [Root exception is javax.naming.CommunicationException: Failed to connect to server https:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server https:1099 [Root exception is java.net.UnknownHostException: https: https]]]
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1399)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at com.ehsbe.commons.gui.AppServerSettingsDialog$ServerTestThread.run(AppServerSettingsDialog.java:280)
Caused by: javax.naming.CommunicationException: Failed to connect to server https:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server https:1099 [Root exception is java.net.UnknownHostException: https: https]]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:254)
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1370)
... 4 more
Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server https:1099 [Root exception is java.net.UnknownHostException: https: https]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:228)
... 5 more
Caused by: java.net.UnknownHostException: https: https
at java.net.InetAddress.getAllByName0(InetAddress.java:1128)
at java.net.InetAddress.getAllByName0(InetAddress.java:1098)
at java.net.InetAddress.getAllByName(InetAddress.java:1061)
at java.net.InetAddress.getByName(InetAddress.java:958)
at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:61)
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:224)
... 5 more

Either correct stack traces should be returned, or localized messages, which a normal enduser (i.e. not a developer) is able to understand...