RSS Feed Error

Link: http://www.the-heap.com/feed

Hi,

I’m getting the following error when trying to access my feeds…

XML Parsing Error: XML or text declaration not at start of entity
Location: http://www.the-heap.com/feed/
Line Number 6, Column 1:

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

Can someone please give me a step by step explanation of what I need to do to fix the error. I’ve search and found out that the problem might be due to space…but I don’t know where to delete the space. I’ve also installed and ran fix-rss plugin and it didn’t work. I think it’s because the plugin fixes problems on line number 2 and my problem is on line number 6. Any help would be appreciated.