Page Loads Fine, But Gives A 404 Header?

[eluser]mrdl2006[/eluser]
Does anyone why this is occurring? The page in question is pure JSON and does not use a view, however it gives a 404, which the Javascript framework I am working with does not play nicely with.

[eluser]mrdl2006[/eluser]
This is ridiculous its giving me a 404 header on all my pages when they load fine!!!