page contains errors

Error I am receiving:
This page contains the following errors:
error on line 5 at column 63: EntityRef: expecting ‘;’
Below is a rendering of the page up to the first error.

Sitemap can be found here: http://www.motorheadjewelry.com/sitemap-image.xml

Any thoughts?

http://wordpress.org/extend/plugins/google-sitemap-image/