I've created a podcast through my website (http://www.niall.ca/?feed=podcast) using the Podpress plugin. When I run it through Feed Validator I get the following error:
XML parsing error: <unknown>:268:72: not well-formed (invalid token)
The feed works fine in Google Reader and on NetNewsWire for Mac. But it does not work on Firefox 3 for Mac or through iTunes. On Firefox, no posts appear; on iTunes, it returns a general exclamation mark error. The feed does work on those two latter applications when the number of posts is limited to six or less through WordPress.