Custom Post Type permalink not working on new posts

I have a custom post type ‘venues’ on a site I’m working on. I have the permalinks setup so they are as follows: http://www.site-name.com/venues/venue-name

This has worked fine ’til now. But whenever I add a new venue the permalink on it doesn’t seem to work – it simply goes to a blank white page. I’m unsure how to go about fixing this since it’s working on all the previous venue entries.

Below is the relevant code for the Custom Post Type:

function venues () {
	$labels = array(
		'name'               => _x( 'Venues', 'post type general name' ),
		'singular_name'      => _x( 'Venue', 'post type singular name' ),
		'add_new'            => _x( 'Add New', 'venue' ),
		'add_new_item'       => __( 'Add New Venue' ),
		'edit_item'          => __( 'Edit Venue' ),
		'new_item'           => __( 'New Venue' ),
		'all_items'          => __( 'All Venues' ),
		'view_item'          => __( 'View Venues' ),
		'search_items'       => __( 'Search Venues' ),
		'not_found'          => __( 'No Venues found' ),
		'not_found_in_trash' => __( 'No Venues found in the Trash' ),
		'parent_item_colon'  => '',
		'menu_name'          => 'Venues'
	);
	$args = array(
		'labels'        => $labels,
					'taxonomies'			=> array('category'),

		'description'   => 'This is where all of the venues in the Find Us section are held',
		'public'        => true,
		'menu_position' => 5,
		'supports'      => array( 'title', 'thumbnail'),
		'has_archive'   => true,
					'rewrite'					 => array('slug' => 'venue'),

	);
	register_post_type( 'venues', $args );
}

I’d really appreciate any help with this.