Correction:
The last sentence of the second paragraph should read:
In order for the feed to work correctly, it should be generated as http://pepperspray.me/feed (no trailing slash at the end).
Sorry ’bout that.
I spent countless hours looking for blank lines and deleting a few here and there.
Then I noticed that the links to my RSS feeds were being generated as http://pepperspray.me/feed/ (notice the trailing slash at the end). In order for the feed to work correctly, it should be generated as http://pepperspray.me (no trailing slash at the end).
I went into my admin, and checked out my permalink settings. I removed the trailing slash from my custom permalink structure, and voila! My feed works like a charm now.
I don’t know if this helps you out or not, but it worked wonders for me.