Forum RSS Feed problem
 

I'm having problems viewing my RSS feeds. I have enabled it in the External Data Provider settings and yet when you click an RSS link next to a forum it takes you to a blank page. If I use my RSS reader (copying and pasting the url form the forum's rss link) I get an error message "The feed could not be loaded because the content is not in a known format"

A search last evening on these forums didn't show anyone else with this issue and so I'm wondering what I've not got set up properly here.

Suggestions?