Erro Fatal

Pessoal,

Estou testando um blog, mas o mesmo dá esse erro, o que é?

**Fatal error: Call to undefined function get_header() in /home/oquequer/public_html/index.php on line 1**

 

<?php get_header();?>
<div id="outer">
<div id="inner">
<div id="container">
 <div class="search">
 <form method="get" id="searchform" action="<?php bloginfo('url'); ?>/">
 <input type="text" value="<?php the_search_query(); ?>" name="s" id="s" class="txtField" />
 <input type="submit" id="searchsubmit" class="btnSearch" value="Find It »" />
 </form>
 </div>
 <div id="blog-title">
 <span class="title"><a href="<?php echo get_option('home'); ?>/"><?php bloginfo('name'); ?></a></span>
 <span class="description"><?php bloginfo('description'); ?></span>
 </div>
 <div class="col01">
 <!-- begin post -->
	<?php if (have_posts()) : ?>
	<?php while (have_posts()) : the_post(); ?>
 <div class="post" id="post-<?php the_ID(); ?>">
 <h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></h2>
 <div class="post-content">
 <div class="tab-date">
 <span class="month"><?php the_time('F') ?></span>
 <span class="day"><?php the_time('j') ?></span>
 </div>
 <?php the_content('Read the rest of this entry »'); ?>
 </div>
 <div class="meta"><?php the_category(', ') ?>  |  <?php comments_popup_link('No Comments »', '1 Comment »', '% Comments »'); ?></div>
 </div>
 <?php endwhile; ?>
 <div class="post-nav"><span class="previous"><?php next_posts_link('« Older Entries') ?></span><span class="next"><?php previous_posts_link('Newer Entries »') ?></span></div>
 <?php else : ?>
 <div class="no-results">
 <h3>Not Found</h3>
 <p>Sorry, but you are looking for something that isn't here.</p>
 </div>
 <?php endif; ?>
 <!-- end post -->
 </div>
 <?php include ('columns.php'); ?>
 <br clear="all" />
 </div>
<?php get_footer(); ?>