Templates don’t work anymore

Hello,

I have the following issue: My self-made templates are not shown in the template-menu when editing a page although I copied the code from inove-templates. A few weeks ago this worked, but at the moment not.

Here’s the code of one of my templates:

<?php

/*

Template Name: Kontakt Impressum

*/

?>

<?php get_header(); ?>
<?php $options = get_option('inove_options'); ?>

<?php if (have_posts()) : the_post(); update_post_caches($posts); ?>

        <div class="post" id="post-<?php the_ID(); ?>">
                <h2>Kontakt-/Buchungsformular</h2>
                <div class="info">

                        <div class="act">
                                <?php if ($comments || comments_open()) : ?>
                                        <!-- <span class="comments"><a href="#comments"><?php _e('Goto comments', 'inove'); ?></a></span>
                                        <span class="addcomment"><a href="#respond"><?php _e('Leave a comment', 'inove'); ?></a></span> -->
                                <?php endif; ?>
                                <?php edit_post_link(__('Edit', 'inove'), '<span class="editpost">', '</span>'); ?>
                                <div class="fixed"></div>
                        </div>
						<?php insert_cform(); ?>
                        <div class="fixed"></div>
                </div>

                 <div class="content">
                        <?php the_content(); ?>
                        <div class="fixed"></div>
                </div>
        </div>

<?php else : ?>
        <div class="errorbox">
                <?php _e('Sorry, no posts matched your criteria.', 'inove'); ?>
        </div>
<?php endif; ?>
<?php get_footer(); ?>

What could be the reason for that?

Thanks a lot,
parser022