having trouble accessing rss feed addresses through safari

When I'm looking at a blog in Safari, and click the button for (say) "RSS feeds, entries," I get an error message that says "no associated application could be found." I have no way to get the feed address.

I used to get a pop-up menu that allowed me to to either import the feed into one of the popular readers, or to cut and paste it manually.I'm using Feedly now (and playing with Digg Reader), if that helps.

On Firefox, all works exactly as expected.