Index: functions.php
===================================================================
--- functions.php	(revision 1820)
+++ functions.php	(working copy)
@@ -85,7 +85,7 @@
 
 	register_nav_menus();
 
-	add_action( 'after_switch_theme', __NAMESPACE__ . '\\add_roles' );
+	add_action( 'after_switch_theme', array( 'Devhub_Handbooks', 'add_roles' ) );
 	add_action( 'pre_get_posts', __NAMESPACE__ . '\\pre_get_posts' );
 	add_action( 'wp_enqueue_scripts', __NAMESPACE__ . '\\theme_scripts_styles' );
 	add_action( 'wp_head', __NAMESPACE__ . '\\header_js' );