It would help if you turned off your feedburner plugin and posted your site url here so that we can check the WordPress generated feed.
I’m also having the same problem.
RSS Error: A feed could not be found at http://blogsearch.google.com/blogsearch_feeds?scoring=d&ie=utf-8&num=10&output=rss&partner=wordpress&q=link:http://fitnellamag.com/wordpress/. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.
Do anyone know how to fix this?
having the same issues with buddypress feeds, some feeds work and some don’t even though there’s nothing different about any of them. It seems many people are having feed issues and so far from all the support posts I have seen in many places there’s just no answers or solutions. Even the error message and suggested fix no-one seems to agree that it’s a real solution to use force_feed()