WP 2.3 und Simple Tagging

<?php if (class_exists('SimpleTagging')) : ?>
					<div id="stprelated">
					<h4>&Auml;hnliche Artikel:</h4>
					<ul>
						<?php STP_RelatedPosts() ?>
					</ul>
					</div>
				<?php endif; ?>

WordPress database error: [Table 'wordpress.wp_post2cat' doesn't exist]
SELECT p2c.category_id AS cat_id, COUNT(p2c.rel_id) AS numposts, UNIX_TIMESTAMP(max(posts.post_date_gmt)) + '2' AS last_post_date, UNIX_TIMESTAMP(max(posts.post_date_gmt)) AS last_post_date_gmt FROM wp_post2cat p2c INNER JOIN wp_posts posts ON p2c.post_id=posts.id WHERE 1 = 1 AND posts.post_type = 'post' AND posts.post_status = 'publish' AND posts.post_date_gmt <= '2007-09-25 20:55:52' GROUP BY p2c.category_id ORDER BY numposts DESC