title: Wordpress: after_setup_theme not loading after theme setup
body: <p>In a plugin I've done an <code>add_action( 'after_setup_theme' , 'some_funct' );</code> and then the plugin calls a function named in the theme's functions.php file.</p>
  
  <p>It should work! It came in after "theme setup"! Yet its saying <strong>undefined function</strong>!!! I'm living in the twighlight zone. </p>
  
  <p>Is there any instances or reasons after_setup_theme would disobey the idea of loading <strong><em>after</em></strong> theme setup?</p>
  
  <p>---<em>Interestingly out of the 30 sites running this, only one of them is pulling this stunt. Very strange - I have never seen it before.</em></p>