Home Page menu button problem

I just launched this site at: http://www.breakawaydistributing.com

Everything works fine except for the home page menu button. When clicked it produces: http://www.breakawaydistributing.com/breakawaydistributing.com/ and therefore breaks the page. This only happens with the home page menu button, yet all of the pages have the same header.

I am using <base href="[[!++site_url]]" />

Can anyone help?

Please dont double post as others will not know what has been tried.

http://modxcms.com/forums/index.php/topic,65923.0/topicseen.html