I have tried to use it all attempts failed until in added
/httpdocs/components/com_ninjarsssyndicator
to the htaccess Exceptions -> Allow direct access, including .php files, to these directories.
I don't like this option so if any one have a better method I would like to know.
Also the links in the RSS feed don't work I have check then and the link is correct but if use external fro the site it returns 'Forbidden You don't have permission to access' I have also used the Joomla RSS Fedd and get the same error.
Best Regards
John