Taxonomy second page not display error 404
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Hy guys, the second page of a taxonomy do not display, i get an error 404

i use this

    <?php global $wp_query;
    $args = array_merge( $wp_query->query, array( 'post_type' => 'clip'  ) );
    query_posts( $args ); ?>
    <div class="nav">
    <?php if(function_exists('wp_paginate')) {wp_paginate();} ?>
    </div>
    <?php is_tag(); ?>
    <?php if (have_posts()) : ?>
    <?php while (have_posts()) : the_post(); ?>

Anny solution for fixing this?