Category based post

Hi, I am designing a custom wordpress site on wamp server. It has to go up soon. This is my first wordpress custom project so please bare with me if I am being silly. Thanks.
I have created a category catering_menu. A template single-category_catering_menu.php for displaying 1 post on that category. I have modified a single.php. Created a single_default.php as well. I am facing few issues like;
When I preview a new post it shows but when i press previous post link it displays the same new post but the address bar shows previous post link.
When I edit an older post it has the same issue.
When I change the theme to twentytwelve theme it shows properly and next previous working properly.
What am I doing wrong. What is missing.
Please help. Below are the files’ codes.

–File single-category_catering_menu.php—
<?php get_header(); ?>
<div class="grid-6">Catering</div>
<div class="grid-6 nextPrev">Next Previous</div>
<div class="grid-8 planMenuBgd">
<?php query_posts('cat=10&posts_per_page=1'); ?>
<?php if (have_posts() ) : while ( have_posts() ) : the_post(); ?>
<h2 class="title"><?php the_title(); ?></h2>
<div class="entry">
<?php the_content(); ?>
</div>
<div class="navigation">
<span class="nav-previous"><?php previous_post_link( '%link', '<span class="meta-nav">' . _x( '←', 'Previous post link', 'FaitMaison' ) . '</span> %title', 'TRUE' ); ?></span>
<span class="nav-next"><?php next_post_link( '%link', '%title <span class="meta-nav">' . _x( '→', 'Next post link', 'FaitMaison' ) . '</span>', 'TRUE' ); ?></span>
</div><!-- end navigation -->

<?php endwhile; endif; ?>
</div>
<div class="grid-4"><?php get_sidebar(); ?></div>
<?php get_sidebar('catering'); ?>
<?php get_footer(); ?>

–single.php
<?php
$post = $wp_query->post;
if (in_category('catering_menu')) {
include(TEMPLATEPATH.'/single-category_catering_menu.php');
}
else{
include(TEMPLATEPATH.'/single_default.php');
}
return;
?>

— file single_default.php
<?php
get_header(); ?>

<div class="grid-8 planMenuBgd">
<?php while ( have_posts() ) : the_post(); ?>
<?php the_content(); ?>
<div class="navigation">
<span class="nav-previous"><?php previous_post_link( '%link', '<span class="meta-nav">' . _x( '←', 'Previous post link', 'FaitMaison' ) . '</span> %title', 'TRUE' ); ?></span>
<span class="nav-next"><?php next_post_link( '%link', '%title <span class="meta-nav">' . _x( '→', 'Next post link', 'FaitMaison' ) . '</span>', 'TRUE' ); ?></span>
</nav><!-- .nav-single -->
<?php endwhile; // end of the loop. ?>
</div><!-- END GRID-8 -->

<?php get_sidebar(blog); ?>
<?php get_footer(); ?>
—file category.php—
<?php get_header(); ?>

<div class="grid-8 planMenuBgd">

<?php if ( have_posts() ) : ?>
<header class="archive-header">
<h1 class="archive-title"><?php printf( __( 'Category Archives: %s', 'FaitMaison' ), '<span>' . single_cat_title( '', false ) . '</span>' ); ?></h1>

<?php if ( category_description() ) : // Show an optional category description ?>
<div class="archive-meta"><?php echo category_description(); ?></div>
<?php endif; ?>
</header><!-- .archive-header -->

<?php
/* Start the Loop */
while ( have_posts() ) : the_post();
<?php the_content(); ?>

endwhile;
?>

<?php else : ?>
<?php get_template_part( 'content', 'none' ); ?>
<?php endif; ?>

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

Thank you in Advance. 🙂