Settings API no update status? (refering to the yellow bar when you save settings)

Adding this beneath the title should do it:

<?php settings_errors(); ?>

WordPress does this for you automatically on the ‘options’ pages, but you have to do it yourself in other sections of the site.

404 Not Found

Not Found

The requested URL was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.