Unable to comment on custom theme

I created a copy of the twenty ten theme on my host server, renamed it and edited that theme so that I can integrate the loop to look like the rest of my site. So far I have edited the index.php, header.php, single.php, and footer.php. When looking at a specific post I am no longer able to comment on it. I click on login at the bottom to leave a reply, I enter my password but it just goes back to the post page without the comment box and without the dashboard at the top. Now, if I click on a category on the sidebar it will bring up the category page and it is not in sync with the rest of my site because I have not edited the category.php I think it is, I see the dashboard at the top though. I want to be able to leave comments while on a post page and be able to access the dashboard at the top of the page while on a single post page. Here is the code for single.php. Let me know if you need anything. Thanks for the help in advance.

<?php
/**
 * The Template for displaying all single posts.
 *
 * @package WordPress
 * @subpackage Twenty_Ten
 * @since Twenty Ten 1.0
 */

get_header(); ?>

<div align=center>
<table cellpadding=10 border=0 width="990">
<tr>
<td align=center>

<script type="text/javascript"><!--
google_ad_client = "ca-pub-1311398213772065";
/* main */
google_ad_slot = "1873501287";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="https://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

</td>
</tr>
</table>
</div>

<div align=center>
<table cellspacing="0" cellpadding="0" background="https://www.vlffl.com/images/static/corner/top_header.jpg" width="990" height="58" id="divborder">
<tr>
<td></td>
</tr>
</table>
</div>

<div align=center>
<table cellspacing="0" cellpadding="0" bgcolor="#ffffff" width="990" height="500" id="divborder">
<tr>
<td align=left>

		<div id="container">
			<div id="content" role="main">

			<?php
			/* Run the loop to output the post.
			 * If you want to overload this in a child theme then include a file
			 * called loop-single.php and that will be used instead.
			 */
			get_template_part( 'loop', 'single' );
			?>

			</div><!-- #content -->
		</div><!-- #container -->

</td>

<td valign=top>
<?php get_sidebar(); ?>
</td>
</tr>
</table>
</div>

<?php get_footer(); ?>