jQuery Ajax returning 404 Error, but correct Response

Question

I\'m posting some data to a PHP script via jQuery AJAX, and everything executes correctly, but it returns a 404 error. In my Firebug console the response from the PHP scrip

Answer 1

Overall there aren't a ton of places where WordPress will return a 404. I recommending grepping the source tree for those places and placing some debug code to trace why it's happening.