[Plugin: Diamond MultiSite Widgets] Network RSS Feed gives Page Not Found

Hello,

We are having trouble with the Recent Posts RSS Feed on our site. When we open the network RSS feed link, we get “Page Not Found” errors.

http://blogs.manchestercommunitycollege.edu/?feed=networkrss

We are using WP 3.1.3 MultiSite network with Diamond MS Widgets 1.8

Anyone else having trouble with the MS Network RSS Feed? http://wordpress.org/extend/plugins/diamond-multisite-widgets/