hello,everyone,I have a problem about compiere runing in eclipse.

error:

OnlineHelp.Worker.run (e) java.lang.NullPointerException
-----------> CConnection.queryAppsServerInfo: jnp://WenJunYin:1099
- javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]
- {java.naming.provider.url=jnp://WenJunYin:1099, java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory, jnp.discoveryTimeout=5000, jnp.timeout=5000, java.naming.factory.url.pkgs=org.jboss.naming.client, jnp.sotimeout=5000}
-----------> CConnection.queryAppsServerInfo: jnp://WenJunYin:1099

I wait ......