RSS Does Not Validate

[sosella]

I am trying to hook up my google / feedburner account to my blog but got an error when I tried to burn (identify) my feed.

I entered my blog URL (http://recyclewear.com/blog) as the Feed URL. It found 2 feeds at:
(1) http://recyclewear.com/blog/?feed=rss2, and
(2) http://recyclewear.com/blog/?feed=comments-rss2

I selected the first one, but got an error "Received HTTP error: "Not Found" while fetching source feed."

It did give me the choice to confirm the feed's validity, however, when I did that I got an error saying that <lastBuildDate /> was empty (doesn't conform).

Do I have to enable RSS feeds in WordPress or Genesis? I have not yet posted anything. Do I have to post something?

I did not enter anything into the Custom Feeds widget in Genesis -> Theme Settings