Faith and Fear in FeedDemon?

Why won't this RSS feed update in FeedDemon? I used Google Reader up until pretty recently, when I switched to FeedDemon. One thing that didn't make the transition is the RSS feed for Faith and Fear in Flushing, a Mets blog I read and enjoy a lot. The feed still updates just fine in Google Reader; in FeedDemon, though, it won't. The feed validates and everything, so I'm not sure what's wrong. Anyone have any idea?