it seems your portlet could not be referenced correctly.

check if portlet-id and portlet-name are the same in your portlet.xml.
The reference of the portlet in your *.psml is mapped to
application-name(webapp name)::portlet-name(from portlet.xml)

Joachim


[EMAIL PROTECTED] wrote:
> I've been trying to run through the simple getting-start tutorial
> (http://portals.apache.org/jetspeed-2/guides/guide-simple-portlet.html)
> but am encountering some problems.  Whenever I try to view the portlet, it
> displays the following exception:
> 
> -------------------------------------------------------------
> Title Error: Cannot pass a null PortletDefinition to a PortletEntity.
> 
> Failed to retrieve Portlet Definition for simplest::SimplestFailed to
> retrieve Portlet Definition for
> simplest::Simplestjava.lang.IllegalArgumentException: Cannot pass a null
> PortletDefinition to a PortletEntity.Failed to retrieve Portlet Definition
> for simplest::SimplestFailed to retrieve Portlet Definition for
> simplest::Simplest
> -------------------------------------------------------------
> 
> I've tried following other JSR-168 tutorials on the web but keep
> encountering this same error.  Anyone know what this means?
> 
> -Ben
> 
> 
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