search.php, 404.php werden nicht erkannt

<?php
session_start();
global $wp_query;
global $wpdb;
$post1 = get_posts(array(
            // arg 1
    ));
$post2 = get_posts(array(
    'post_type' => 'wpsc-product',
    'meta_query' => array(
        'relation' => 'OR',
        array(
            // arg 2
        ),
        array(
            // arg 3
        )
    )
));


$mergedposts = array_merge( $post1, $post2 );
//$mergedposts = array_merge($post2);




$postids = array();
foreach( $mergedposts as $item ) {
$postids[]=$item->ID; 
}
$uniqueposts = array_unique($postids);




$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;




$loop = new WP_Query(array(
    // meine args
    ));


?>
<?php
$suchergebnis = $loop->found_posts; 
?>


<?php get_header(); ?>
<section>
    <article>
        <h1>Suche</h1>
        <form class="searchformfilter" action="" method="POST">
            <?php while ($loop->have_posts()) :  $loop->the_post(); ?>
                // inhalt
            <?php endwhile; ?>


        </form>
     </article>
</section>

<?php
global $wp_query;
?>
 <?php get_header(); ?>
<section>
<article>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
        <h1><?php the_title(); ?></h1>
        <?php the_content(); ?>
<?php endwhile; ?>
<?php endif; ?>
</article>
</section>
<?php get_footer(); ?>
<?php get_footer(); ?>