Get menu objects drawback

I am making an attempt to get a menu objects created from wordpress admin panel.

To do that I adopted the directions codex:
http://codex.wordpress.org/Function_Reference/wp_get_nav_menu_items

// Get the nav menu primarily based on $menu_name (similar as 'theme_location' or 'menu' arg to wp_nav_menu)
    // This code primarily based on wp_nav_menu's code to get Menu ID from menu slug

    $menu_name = 'custom_menu_slug';

    if ( ( $places = get_nav_menu_locations() ) && isset( $places[ $menu_name ] ) ) {
    $menu = wp_get_nav_menu_object( $places[ $menu_name ] );

    $menu_items = wp_get_nav_menu_items($menu->term_id);

    $menu_list = '<ul id="menu-' . $menu_name . '">';

    foreach ( (array) $menu_items as $key => $menu_item ) {
        $title = $menu_item->title;
        $url = $menu_item->url;
        $menu_list .= '<li><a href="' . $url . '">' . $title . '</a></li>';
    }
    $menu_list .= '</ul>';
    } else {
    $menu_list = '<ul><li>Menu "' . $menu_name . '" not outlined.</li></ul>';
    }
    // $menu_list now able to output
echo $menu_list;

However I get all the time the error: Menu “cs-1-language” not outlined.

I attempted with the title and the slug and completely different menus however I all the time discover that error.

Does anybody know what I am doing improper or if there may be one other approach to record the objects of a menu?

Thanks!