Forum:Why won't all RSS feeds work with "rss"?

I cannot, for the life of me, figure out how to get the extension to work with the URL I need. Take a look:

Latest Scrubs News:

http://www.scrubs-hq.com/updates/rss.php

only gives me

Latest Scrubs News:

http://www.scrubs-hq.com/updates/rss.php

Please help!

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