Feed – XML Parsing Error

Hi!

I have upgraded to 2.7 and tried to validate my feed and got this error:

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″?><feed

I already turned off my plugins (I only use 5), searched for blank spaces, but I am unable to fix it. My website: Paulopatricio.com

Any help would really be appreciated!