Sidebar pushes to the bottom of blog post page

My sidebar just recently began pushing to the bottom of my blog post page in the blackbird theme. I havent changed the single.php or sidebar.php files (mind you I am not savvy in that dept at all. This is the link to the post I am referring to: http://www.reigninginlove.com/s-m-a-r-t-goals-for-2014/

Here is the coding for my Single.php file:
<?php
/**
* The Template for displaying all single posts.
*
* @package WordPress
* @subpackage Twenty_Eleven
* @since Twenty Eleven 1.0
*/
?>
<?php get_header(); ?>

<!--Start Page Heading-->
<!--Start Page Content -->
<div class="page-content-container">
<div class="page-content single">
<div class="grid_16 alpha">
<div class="content-bar">
<!-- Start the Loop. -->
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<!--post start-->
<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
<h1 class="post_title single"><span><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php printf( esc_attr__( 'Permalink to %s', 'black-bird' ), the_title_attribute( 'echo=0' ) ); ?>"><?php the_title(); ?></a><span></h1>
<div class="post_content">
<?php the_content(); ?>
<div class="clear"></div>
<?php if (has_tag()) { ?>
<div class="tag">
<?php the_tags(__('Post Tagged with ', ', ', '')); ?>
</div>
<?php } ?>
</div>
<ul class="post_meta">
<li class="posted_by"><img src="<?php echo get_template_directory_uri(); ?>/images/admin.png" />&nbsp;&nbsp;<span>Posted by</span>&nbsp;&nbsp;<?php the_author_posts_link(); ?></li>
<li class="post_category"><span>Posted in</span>&nbsp;&nbsp;<?php the_category(', '); ?></li>
<li class="post_date"><img src="<?php echo get_template_directory_uri(); ?>/images/date.png" />&nbsp;&nbsp; <?php echo get_the_time('M, d, Y') ?></li>
<li class="post_comment"><img src="<?php echo get_template_directory_uri(); ?>/images/comment.png" />&nbsp;&nbsp;<span><?php comments_popup_link('No Comments.', '1 Comment.', '% Comments.'); ?></span>&nbsp;&nbsp;</li>
</ul>
</div>
<!--End Post-->
<?php endwhile;
else: ?>
<div class="post">
<p>
<?php _e('Sorry, no posts matched your criteria.', 'black-bird'); ?>
</p>
</div>
<?php endif; ?>
<!--End Loop-->
<nav id="nav-single"> <span class="nav-previous">
<?php previous_post_link('%link', __('<span class="meta-nav">&larr;</span> Previous Post ', 'nutrition')); ?>
</span> <span class="nav-next">
<?php next_post_link('%link', __('Next Post <span class="meta-nav">&rarr;</span>', 'nutrition')); ?>
</span> </nav>
<!--Start Comment box-->
<?php comments_template(); ?>
<!--End Comment box-->
</div>
</div>
<div class="grid_8 omega">
<!--Start sidebar-->
<?php get_sidebar(); ?>
<!--End sidebar-->
</div>
</div>
</div>
</div>
</div>
</div>
<?php get_footer(); ?>

For my Sidebar.php file:

<div class="sidebar">
<?php if (!dynamic_sidebar('primary-widget-area')) : ?>
<?php get_search_form(); ?>
<h3>
<?php _e('Categories', 'black-bird'); ?>
</h3>
<ul>
<?php wp_list_categories('title_li'); ?>
</ul>
<h3>
<?php _e('Archives', 'black-bird'); ?>
</h3>
<ul>
<?php wp_get_archives('type=monthly'); ?>
</ul>
<?php endif; // end primary widget area ?>
<?php
// A second sidebar for widgets, just because.
if (is_active_sidebar('secondary-widget-area')) :
?>
<?php dynamic_sidebar('secondary-widget-area'); ?>
<?php endif; ?>
</div>

Can anyone help?

 

Hello,

Download theme again from your members area and upload it, This will solve your issue.
Login here: http://inkthemes.com/members/member/index

Thanks & Regards
Gourav Shrivastava