XML Sitemap goes to Homepage

I seem to have an issue with the xml sitemap. It doesn't look like it's suppose to, in fact it looks exactly like my homepage. I included the link to the sitemap down in my signature link. Also when I test the url with google webmaster tools I get this message.
"Your Sitemap appears to be an HTML page. Please use a supported sitemap format instead."
I don't get it though, it seems to be an xml file. Anyone know how to fix this issue?
Thanks in advance.

See original post by Gomar