Look at this link:
http://vibratorpleasures.com/skin/common_files/images/head_linebg.gif
For me it says not found.
On my test site:
http://trainingpen.com/skin/common_files/images/head_linebg.gif
I think the web server configuration, or some simple error is causing the problem.
Its not x-cart specific, I am saying that to relieve you of any worry that it is something you don't understand about the complexities of the cart. It is not.Just some simple filename error or write permissions.