404 error on pages after adding a custom post type

Hello,

I am using a custom post type for a theme and the strange thing is that, the single-<post_type> template works perfecly but when i try to access a page i get a 404 error.

I have rebuilt the permalinks and still get the error.

There is no naming conflict with any page.

The code i am using is the following:

$args_video = array(
            'label' => 'Video',
            'labels' => $labels_video,
            'description' => 'videos',
            'public' => true,
            'exclude_from_search'=>true,
            'show_ui' => true,
            'show_in_menu'=>true,
            'map_meta_cap'=>true,
            '_edit_link' => 'post.php?post=%d',
            'capability_type' => 'post',
            'hierarchical' => false,
            'taxonomies' => array('raz_video'),
            'rewrite' => array("slug" => "raz_video"), // Permalinks format
            'supports' => array('title','page-attributes','thumbnail'),
            'has_archive' => true
        );
        $r = register_post_type('raz_video',$args_video );

Has anyone had this issue before?

Thanks in advance,

Luis