Split RSS Feed into three Feeds (based on Category)

[eluser]invision[/eluser]
My apologies for the delayed reply.
When I visit this: /index.php/vacanciesfeed/category/1 it shows the start of the feed successfully, but then stops just after this line: <admin:generatorAgent rdf:resource="http://www.names.co.uk/" />
with the error message:

Code:

<br />
<b>Fatal error</b>:  Call to a member function on a non-object in <b>....../application/views/vacancies-feed/rss.php</b> on line <b>23</b><br />

Any ideas what this could be?


Thank you