Was working, suddenly stopped

Maybe something to do with the last couple of posts in the Blog? All i know is that suddenly the sidebar RSS feed plugin stopped displaying…

here’s the feed link I’m using:
http://hyperactiveart.blogspot.com/feeds/posts/default

here’s the website (lefthandsidebar supposed to be showing the feed titles linked to new windows like it was no nicely last week)

http://steveellisart.com

thanks for any help!

http://wordpress.org/extend/plugins/jps-get-rss-feed/