RSS Not Working…?

I recently launched a WordPress blog and have heard from a number of people who’ve told me the RSS feed at my site doesn’t work… Can someone look at my site, or suggest anything I can try here?

The site is at:
http://www.ZENtertainment.com/blog

The RSS button is at the bottom of the right-hand column.

This is the direct page that link brings up:
feed:http://www.zentertainment.com/blog/?feed=rss2

And when you load up that you get a “This Page Can Not Be Displayed” error.

I tried just removing the “feed” bit but then I get a bunch of garbled code.

Thanks for any help. I know nothing about RSS…