Feedburner not working!

[Pikei]

Hi. Sorry to write about an outdated theme, but I didn't know where-else to write.

I have the Revolution Pro 40 theme and it has worked perfectly all the time, except one thing. I've never managed to get feedburner working. I try to create a feedburn (or whatever it's called) on their website, but only get an error message. The same thing happens when I click the rss-button on my blog/site.

It says something like: "...XML or text declaration not at start of entity
Location: http://www.pikei.net/?feed=rss2
Line Number 2, Column 1:

<?xml version="1.0" encoding="UTF-8"?>
^
I would appreciate very much if someone could help me solve this problem.

Thanks
Mattias