I fixed this by adding the following line of code to spiders.php after line 82:
$this->post_sql .= " AND {$wpdb->posts}.post_status!='trash' AND {$wpdb->posts}.post_status!='pending' AND {$wpdb->posts}.post_status!='draft' AND {$wpdb->posts}.post_status!='auto-draft' AND {$wpdb->posts}.post_status!='future' AND {$wpdb->posts}.post_status!='private' AND {$wpdb->posts}.post_status!='inherit'";