> java.lang.IllegalArgumentException: only absolute URLs or > full path URIs are allowed
I usually get this if a partial URI is used, i.e. some sort of <img src="images/filename" /> kind of thing. Using an absolute URI, i.e. <img src="/images/filename" /> should resolve it. The issue is that typically even though you're deploying a separate web app, the portal is actually rewriting urls so that it remains the focal point on the generated portal page; without fully qualifying your URIs the portal doesn't know if a resource is relative to the portal root or the portlet root...
