Custom Taxonomy Not working

/* Hooks */

	add_action( 'init', 'nd_brooklin_posttype' );
	add_action( 'init', 'nd_brooklin_taxonomy' );
	add_action( 'init', 'nd_brooklin_metaboxes');

/* Functions */

	function nd_brooklin_posttype(){
			//Set up custom post type variables.
			$labels = array(
			'name' => _x('Brooklin Models', 'post type general name'),
			'singular_name' => _x('Model', 'post type singular name'),
			'add_new' => _x('Add New', 'Model'),
			'add_new_item' => __('Add New Model'),
			'edit_item' => __('Edit Model'),
			'new_item' => __('New Model'),
			'view_item' => __('View Model'),
			'search_items' => __('Search Models'),
			'not_found' =>  __('Nothing found'),
			'not_found_in_trash' => __('Nothing found in Trash'),
			'parent_item_colon' => ''
			);
			$args = array(
			'labels' => $labels,
			'public' => true,
			'publicly_queryable' => true,
			'show_ui' => true,
			'query_var' => true,
			'rewrite' => true,
			'capability_type' => 'page',
			'hierarchical' => false,
			'menu_position' => 20,
			'supports' => array(
								'title',
								'editor',
								'thumbnail'),
			'rewrite' => array( 'slug' => 'model' ),
			);
			//Register the newsletter post type.
			register_post_type( 'nd_brooklin' , $args );
			flush_rewrite_rules();
	}

	function nd_brooklin_taxonomy(){
			register_taxonomy(
				'nd_brooklin_tax',
				'nd_brooklin',
				array(
					'hierarchical' => true,
					'label' => 'Ranges',
					'query_var' => true,
					'rewrite' => true,
					'rewrite' => array( 'slug' => 'ranges' )
				)
			);
			if( function_exists('add_term_ordering_support') ) add_term_ordering_support ('nd_brooklin_tax');
	}

	function nd_brooklin_metaboxes(){
		$pluginDir = WP_PLUGIN_DIR . '/19d_brooklinProducts';
		if(!class_exists('WPAlchemy_MetaBox'))include_once $pluginDir . '/WPAlchemy/MetaBox.php';
		if (is_admin()) wp_enqueue_style('custom_meta_css', WP_PLUGIN_URL . '/19d_brooklinProducts' . '/box-styles.css');

		$nd_brooklin_metabox = new WPAlchemy_MetaBox(
			array(
				'id' => '_nd_brooklin',
				'title' => 'Model Preferences',
				'template' => $pluginDir . '/box-styles/nd_brooklin.php',
				'types' => array('nd_brooklin'),
				'context' => 'normal',
				'priority' => 'high',
				'autosave' => TRUE,
				'mode' => WPALCHEMY_MODE_EXTRACT
			)
		);

	}