RSS Broken

I get this error in firefox when trying to view my feed.
http://www.growingwealthmag.com/?feed=rss2

XML Parsing Error: xml declaration not at start of external entity
Location: http://www.growingwealthmag.com/?feed=rss2
Line Number 1, Column 2: <?xml version=”1.0″ encoding=”UTF-8″?>

feed validator suggested to:

1. Check your wp-rss2.php and wp-atom.php files for blank lines outside of <? and ?> bracketed sections.

2. Check your wp-config.php file for blank lines outside of <? and ?> bracketed sections.

3. Check your theme’s functions.php file for blank lines outside of <? and ?> bracketed sections.

4. One by one, disable plugins and revalidate until you isolate the one causing the problem.

I did those things along with deleting blank lines in other php files after the ?> and I still have that error. Is there a page I am missing that might have a blank line?

Thanks for your help,