Next/Prev not working on single posts.

Okay, there are a number of posts the next/previous links, but they haven’t helped me. What’s worse is I know it was working in a previous version of my theme that got destroyed.

Why won’t my next/previous links show up?

<?php get_header(); ?>

<div id="bd" class="yui-navset">
<div id="yui-main">
<div class="yui-b" >
<div class="yui-g">

<div class="item entry" id="post-<?php the_ID(); ?>">
<!-- item -->
		<div class="itemhead">
			<h3><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h3>
			<div class="chronodata"><?php the_time('F jS, Y') ?> <!-- by <?php the_author() ?> --></div>
		</div>

		<div class="storycontent">
			<?php the_content('Read more &raquo;'); ?>
		</div>
		<small class="metadata">
			<span class="category">Filed under: <?php the_category(', ') ?> <? if(!is_single()) echo "|"; ?> <?php edit_post_link('Edit', '', ' | '); ?> <?php comments_popup_link('Comment (0)', ' Comment (1)', 'Comments (%)'); ?></span>
			<?php
				if ( function_exists('wp_tag_cloud') ) :
				the_tags('<span class="tags">Article tags: ', ', ' , '</span>');
				endif;
			?>
		</small>
		<p> </p>
		<?php comments_template(); // Get wp-comments.php template ?>
		<p> </p>
<!-- end item -->
</div>

	<div class="navigation">
<strong>		<div class="alignleft"><?php next_posts_link('&laquo; Previous Entries') ?></div>
		<div class="alignright"><?php previous_posts_link('Next Entries &raquo;') ?></strong></div>
		<p> </p>
	</div>

<!-- end content -->
</div>
</div>
</div>

<div class="yui-b" id="secondary">
	<?php get_sidebar(); ?>
</div>
</div>
<?php get_footer(); ?>

Here’s a link to an example that SHOULD show it: https://cymonsgames.retroremakes.com/dynatherms-connected/. It works on the front page. Same format, same everything.

Any ideas.