First is this: Something nasty happened while trying to build classpath for update manager.
java.lang.reflect.InvocationTargetException
The second message is this
java.lang.ClassNotFoundException:games.stendhal.client.events.RpobjectChangeListener
Anonymous
Hi we need more details to help here or to work out what the problem can be,
http://stendhal.game-host.org/wiki/index.php/SubmitBug has info on the kind of details we need - thanks :)