Unable to download newly released-all episodes.

I just released all episodes for "Crescent" and "The Failed Cities Monologues". The episodes show up in iTunes, but I was only able download 3 of them: 2 from Crescent, 1 from Monologues. The rest stop with (err = 500). I've tried resuming after 15 minutes, but the errors continue.

Running iTunes 7.6.1.9 without simultaneous downloading. I released all episodes on Podiobooks before I subscribed to the feed.
 
indifferent I’m waiting
Inappropriate?
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