404 Error on Custom Post Type even after permalink flush [closed]

Question

This is what my code looks like:

add_action( 'init', 'create_my_post_types' );

function create_my_post_types() {
    register_post_type( 'competitor_claims',
                       array(
                             'labels' => array(
                                              'name' => __( 'Competitor Claims' ),
                                              'singular_name'  => __( 'Competitor Claim' )
                                              ),
                             'public' => true,
                             'show_ui' => true, // UI in admin panel
                             '_builtin' => false, // It's a custom post type, not built in!
                             '_edit_link' => 'post.php?post=%d',
                             'capability_type' => 'post',
                             'menu_position' => 20,
                             'hierarchical' => true,
                             'query_var' => true,
                             'supports' => array(
                                                 'title',
                                                 'editor',
                                                 'excerpt',
                                                 'custom-fields',
                                                 'thumbnail',
                                                 'page-attributes'
                                                 ),
                             'rewrite' => array(
                                                'slug' => 'claims',
                                                'with_front' => false
                                                ),
                             // Add taxonomies...
                             'permalink_epmask' => EP_PERMALINK

                             )
                       );
}