RSS not Working

Hi everybody.

Feed on my WordPress site (www.swissteam.eu) does not work anymore.

The error is about the XML declaration.

I tried this to fix
http://feedvalidator.org/docs/error/WPBlankLine.html

and also a similar plugin but no luck, I assume they’re old (also I can’t find “wp-rss2” and “wp-atom” files, just the “feed-rss2.php” and similar)

Any “up to date” solution?

Ah, I use feed just to run an app called RSS Graffiti on Facebook, which allows me to automatically share my WP blog posts in my profile. Any alternative solution for this is also welcome!