Multi Page Post Problem WordPress

Brennen Jones comments:

Yeah, I'm aware of the validator problem...It seems that everytime a change is made that the errors go up...one day I will have to sit down and take the time out to sort through my theme and validate everything.

Here's the code for my single.php file.
<?php get_header(); ?>

<div id="topLeaderboard">

<?php advman_ad('Leader'); ?>
</div>

<?php include('featured_posts_slideshow.php') ?> <!--Adds Featured Posts -->

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

<?php if(in_category ('from-the-bottom-up-fernando-quijano')) {?>

<div class="col-banner">

<img src="http://theurbantwist.com/online/wp-content/themes/yamidoo/images/the-word-pimp.jpg">

</div>
<?php }?>


<?php if(in_category ('the-most-hated-list-bryan-stewart')) {?>

<div class="col-banner">

<img src="http://theurbantwist.com/online/wp-content/themes/yamidoo/images/the-most-hated.png">

</div>
<?php }?>


<?php if(in_category ('the-speaker-box')) {?>

<div class="col-banner">

<img src="http://theurbantwist.com/online/wp-content/themes/yamidoo/images/the-speaker-box.png">

</div>
<?php }?>




<div id="title"><?php breadcrumbs_plus( $args ); ?>
<h1><?php the_title(); ?></h1>
</div>


<div class="post">

<div class="post" id="post-<?php the_ID(); ?>">

<small><?php echo get_avatar( get_the_author_id() , 35 ); ?> By <?php the_author_posts_link(); ?> on <?php the_time('F j, Y') ?> at <?php the_time() ?> | <?php comments_popup_link('No comments yet', '1 comment so far',
'% comments so far (is that a lot?)', 'comments-link', 'Comments are
off for this post'); ?> <?php edit_post_link( __('Edit'), ' | ', ''); ?>



</small><br />


<div style="clear:both;"></div>



<div id="socialicons">



<div style="float:left;padding-right:5px;"><?php if (function_exists('fbshare_manual')) echo fbshare_manual(); ?></div>

<div style="float:left;padding-right:5px;"><a href="http://twitter.com/share" class="twitter-share-button" data-count="horizontal" data-via="theurbantwist">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script></div>


<div style="float:left;padding-right:5px;margin-left:-15px;"><script src="http://www.stumbleupon.com/hostedbadge.php?s=1"></script></div>

<script type="text/javascript">
(function() {
var s = document.createElement('SCRIPT'), s1 = document.getElementsByTagName('SCRIPT')[0];
s.type = 'text/javascript';
s.async = true;
s.src = 'http://widgets.digg.com/buttons.js';
s1.parentNode.insertBefore(s, s1);
})();
</script>
<!-- Compact Button -->
<a class="DiggThisButton DiggCompact"></a>


</div>

<div style="clear:both;"></div>


<!-- surphace start -->


<div class='pagenavi pagenavi-top'><?php TA_content_jump(1); ?></div>


<?php the_content('<p>Read the rest of this entry &raquo;</p>'); ?>

<div class='pagenavi pagenavi-top'><?php TA_content_jump(1); ?></div>


<!-- surphace end -->

<div id="social-headlines">
<h7>Get The Urban Twist on
<a href="http://facebook.com/theurbantwist" target="_blank">Facebook</a> and
<a href="http://twitter.com/theurbantwist" target="_blank">Twitter</a>!</h7>
<br><br><h7>Don't Forget to Sign Up For
Our Brand New <a href="http://theurbantwist.com/newsletter/" target="_blank">Newsletter</a>!</h7>
</div>


<div id="like-story">
<h1>Do You Like This Story?</h1>
<iframe src="http://www.facebook.com/plugins/like.php?href=<?php echo urlencode(get_permalink($post->ID)); ?>&amp;layout=standard&amp;show_faces=false&amp;width=450&amp;action=like&amp;colorscheme=light" scrolling="no" frameborder="0" allowTransparency="true" style="border:none; overflow:hidden; margin-top:-10px; width:450px; height:30px;"></iframe>
</div>


<div id="outbrain"></div>


<div id="ad-story">
<?php advman_ad('Sidebar Top'); ?>
</div>


<div style="clear:both;"></div>


<small><?php the_tags( __( '<span class="tag-links">Tags: ', 'wpbx' ), ", ", "</span>\n" ) ?></small>


<div class="clear"></div>


</div>




<div class="clear"></div>



<?php comments_template(); ?>


<?php endwhile; else: ?>

<p>Sorry, no posts matched your criteria.</p>

<?php endif; ?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>

Thanks

Brennen Jones comments:

That did the trick! Thanks a lot. I'll have to watch what my writers do more carefully. I didn't write the post, so I don't know how that happened.