kmessinger on "RSS does not resolve"

•Check your wp-rss2.php and wp-atom.php files for blank lines outside of <? and ?> bracketed sections.
•Check your wp-config.php file for blank lines outside of <? and ?> bracketed sections.
•Check your theme's functions.php file for blank lines outside of <? and ?> bracketed sections.
•One by one, disable plugins and revalidate until you isolate the one causing the problem.