Error on home page.

my site is https://airsoftownage.com

i have a featured article thing on my theme evid. if i select the catorgory and post i get the error on the main page and the rest of my theme is gone. Maybe it’s a div I’m not sure.

<div id="header2">
<div id="header3">

<div class="prev">
<img src="<?php bloginfo('stylesheet_directory'); ?>/images/previous-hover.png" class="prev-button" alt="previous" />
</div>
<div id="sections">
<ul>
<?php $my_query = new WP_Query('category_name=Featured Articles&showposts=5;');
while ($my_query->have_posts()) : $my_query->the_post();
$do_not_duplicate = $post->ID; ?>
<?php
// check for thumbnail
$thumb = get_post_meta($post->ID, 'Thumbnail', $single = true);
// check for thumbnail class
$thumb_class = get_post_meta($post->ID, 'Thumbnail Class', $single = true);
// check for thumbnail alt text
$thumb_alt = get_post_meta($post->ID, 'Thumbnail Alt', $single = true);
?>
<?php // if there's a thumbnail
if($thumb !== '') { ?>
<li>
<div class="featured" style="background-image: url(<?php bloginfo('stylesheet_directory'); ?>/timthumb.php?src=<?php echo $thumb; ?>&h=277&w=858&q=50&zc=1);">
<div class="featured-inside">
<div class="post-info-featured">Posted by <?php the_author() ?> in  on  <?php the_time('m jS, Y') ?> |  <?php comments_popup_link('No Comments', '1 Comment', '% Comments'); ?></div>
<a href="<?php the_permalink() ?>" rel="bookmark" class="titles-featured" title="Permanent Link to <?php the_title(); ?>"><?php the_title2('', '...', true, '35') ?></a>
<?php the_content_limit(170, ""); ?>
<div style="clear: both;"></div>
<div class="play-button">
<a href="<?php the_permalink() ?>" title="Permanent Link to <?php the_title(); ?>" class="play-button-hover"><img src="<?php bloginfo('stylesheet_directory'); ?>/images/play-video-hover.png" style="margin: 0px 0px 0px 0px; border: none;" alt="post bottom" /></a>
</div>

</div>
</div>
</li>
<?php } // end if statement
// if there's not a thumbnail
else { echo ''; } ?>
<?php endwhile; ?>
</ul>
</div>
<div class="next">
<img src="<?php bloginfo('stylesheet_directory'); ?>/images/next-hover.png" class="next-button" alt="next" />
</div>

</div>

there is the code it says the error is on line 27 I dont know. Please help me. Thanks in advance