We just installed your plugin on one site to test it. This site has another database prefix (not wp_) and your plugin shows no results.
In order to make it work, we have made following changes in wp-postratings-cheater-settings.php.
We would be very happy you could include them in your next release:
Original code in wp-postratings-cheater-settings.php – Lines 83-86: $sql = "select a.meta_id, a.post_id, a.meta_key, a.meta_value, b.post_title ". "from wp_postmeta as a join wp_posts as b on a.post_id = b.id ". "where a.meta_key = 'ratings_score' ". "order by a.post_id;";