When all's said and done, you need to check your RSS feed to see if it's well-formed, and has all the elements in the right places. My favorite place for that is FeedValidator.org. It's free and easy to use. You just put in the url of your RSS feed and it either give you an OK, or tells you what's wrong with it. It hasn't been updated since 2009, but not much has changed in the standards since then. I hightly recommend it.