[Plugin: podPress] Image not Appearing in iTunes

I installed this plugin today and created the first podcast associated with my feed, which is located at: http://blog.garagepunknyc.com/category/etc/podcasts/feed

The documentation says I need two images, one at 600×600 and one at 144×144. I’ve created those two, which are located at:

http://blog.garagepunknyc.com/wp-content/uploads/2012/12/garagepunknyc-logo11.png

and

http://blog.garagepunknyc.com/wp-content/uploads/2012/12/gpnyc2-rss.jpg

My feed validates, I can subscribe to my podcast in iTunes and it downloads the episode.

BUT it does not display an image thumbnail on the podcast in iTunes. Is there something wrong with my images or do I have to have a FeedID in iTunes for the image to appear?

I’m using the category channel casting feature.

http://wordpress.org/extend/plugins/podpress/