Archiv-Seite wird nicht dargestellt

<?php get_header();?>
  <div id="content">
 
   <!-- primary content start -->
   <?php if (have_posts()) : ?>
   <?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
 
   <?php /* If this is a category archive */ if (is_category()) { ?>    
   <h2 class="pagetitle">Archiv f&uuml;r die Kategorie '<?php echo single_cat_title(); ?>'</h2>
      <?php /* If this is a Tag archive */ } elseif (function_exists('is_tag')&& is_tag()) { ?>
      <h2 class="pagetitle">Archiv f&uuml;r das Tag '<?php single_tag_title(); ?>'</h2>
 
   <?php /* If this is a daily archive */ } elseif (is_day()) { ?>
   <h2 class="pagetitle">Tagesarchiv f&uuml;r den <?php the_time('d.m.Y'); ?></h2>
 
   <?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
   <h2 class="pagetitle">Monatsarchiv f&uuml;r <?php the_time('F Y'); ?></h2>
   <?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
   <h2 class="pagetitle">Jahresarchiv f&uuml;r <?php the_time('Y'); ?></h2>
 
   <?php /* If this is a search */ } elseif (is_search()) { ?>
   <h2 class="pagetitle">Suchergebnisse</h2>
 
   <?php /* If this is an author archive */ } elseif (is_author()) { ?>
   <h2 class="pagetitle">Autorenarchiv</h2>
   <?php /* If this is a paged archive */ } elseif (isset($_GET['paged']) && !empty($_GET['paged'])) { ?>
   <h2 class="pagetitle">Blog-Archiv</h2>
   <?php } ?>   
  <?php while (have_posts()) : the_post(); ?>
   <div class="post" id="post-<?php the_ID(); ?>">
    <div class="header">
     <div class="date"><em class="user"><?php the_author() ?></em> <br/><em class="postdate"><?php the_time('d.m.Y') ?></em></div>
     <h3><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></h3>     
    </div>
    <div class="entry">
     <?php the_content('Den ganzen Beitrag lesen &raquo;'); ?>
    </div>
    <div class="footer">
     <ul>
      <li class="readmore"><?php the_category(' , ') ?> <?php edit_post_link('Bearbeiten'); ?></li>
      <li class="comments"><?php comments_popup_link('Keine Kommentare', 'Ein Kommentar', '% Kommentare'); ?></li> 
     </ul>
    </div>    
   </div> 
  <?php endwhile; ?>
  <p align="center"><?php posts_nav_link(' - ','« Vorherige Eintr&auml;ge','N&auml;chste Eintr&auml;ge »') ?></p>  
 <?php else : ?>
  <h2 class="center">Nichts gefunden.</h2>
 <?php endif; ?>
   <!-- primary content end --> 
  </div>  
 <?php get_sidebar();?> 
<?php get_footer();?>