Recent Posts widget delivers Parse Error for single.php

When clicking on a “recent post” in the sidebar of my Twenty Ten child template (www.intouchcalls.com/blog), I get the following error:

Parse error: syntax error, unexpected $end, expecting T_VARIABLE or T_DOLLAR_OPEN_CURLY_BRACES or T_CURLY_OPEN in /home/content/76/10560376/html/blog/wp-content/themes/twentyten/single.php on line 28

The single.php code looks like this:

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

get_header(); ?>

		<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 -->
<?php comments_template(",true); ?>
<?php get_sidebar(); ?>
<?php get_footer(); ?>

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I’ve already deactivated all plugins, reinstalled a fresh WordPress version and tried a different theme. All have the same issue.

What do you think?

Thanks for your help.