RSS does not work!!

Hello.

My RSS does not work, when I join http://feedvalidator.org appears this:

Sorry
This feed does not validate.
* line 2, column 0: XML parsing error: <unknown>:2:0: xml declaration not at start of external entity [help]

<?xml version=”1.0″ encoding=”UTF-8″?>

Source: http://pruneda.zobyhost.com/feed

1. 
2. <?xml version=”1.0″ encoding=”UTF-8″?>
3. <rss version=”2.0″…

What I should do?

I have no idea

Regards!