Danny,
I'm not sure what Qlue 404 is doing, but I disabled that plugin, and our page loads fine. For some reason, it's thinking that our page doesn't exist.. which it obviously does, since when that plugin is disabled, it works.
I don't have any real solutions, unfortunately, for fixing the issue since I don't know that extension. I'd recommend contacting their developer who can hopefully help.
Thanks for the access to the site, and definitely let us know if there's anything else we can help with!
Alex