I'm trying to use dataobjectmanager on a custom leftandmain extension so I can have like a global settings page. But when I try and add an item to the dataobjectmanager the dialog pops up and shows a file not found error. When I put some debug code in the method that generates the form for the popup that renders so I know its not a true 404 error. When I look at the url of the popup it shows http://localhost/silverstripe/admin/settings/regionManagment/field/Regions/add. Which looks correct to me other than that it has the /settings/ it's the same as the ones that I use on the content pages.
Anyone have any ideas or know of a fix for this problem?