The 404 page of my template does not load. The code instructs it to get the header, footer etc., and leave an instruction for the user to "Use the search feature to find what you're looking for or use the contact page." with links to the Search and Contact features. But when I deliberately hit a 404, say at http://www.cvltvs.com/asdf I get a white page that says the page is not found on the server, as you can see. No theme and no customisation.
I have read the codex regarding custom and creation of 404s, but that doesn't help. The server isn't going to my 404 page at all. I don't have access to the server itself as I'm using a host, so I can't access the .htaccess files. I've also searched through this forum, but none of the advice given to others helps me out.
Any ideas anyone?