secured paths and planet aggregations in Roller 4.0

[jonathan]

I've been using security.xml to secure various blogs only allowing 
certain user types access:

<property name="objectDefinitionSource">
            <value>
                PATTERN_TYPE_APACHE_ANT
                ...
                 /<blogname>/**=register
                ...
            </value>
etc...
However... This is causing big troubles when I attempt to create planet 
groups.  I get the following error when trying to add a feed 
(http://blogs.domain.com/roller/<blogname>/feed/entries/atom) to a 
custom aggregation group:


ERROR 2008-09-17 10:34:52,954 PlanetSubscriptions:save - Unexpected 
error saving subscription
Error fetching subscription - 
http://blogs.domain.com/roller/<blogname>/feed/entries/atom
--- ROOT CAUSE ---
com.sun.syndication.io.ParsingFeedException: Invalid XML: Error on line 
1: Content is not allowed in prolog.


If I remove the security configuration, the problem goes away.  Is there 
a way to do this and keep the security.xml paths secured?  I assume the 
application is getting denied access to the feed due to lack of credentials?

Any help greatly appreciated, as always.

jonathan.