From: Shing Wai Chan <shing.wai.chan_at_oracle.com>
Date: Wed, 24 Aug 2011 09:19:29 -0700

Which version of GlassFish are you using?
Does ${com.sun.aas.instanceRoot}/applications/[context_root] exist?
I think it should app-name.
Since you already set the default web module, there is no need to set
the context root as in (5).