popular category plugin

Servus,

ive read that the pop cat plugin is resulting some errors when using it with ver 1.5+… so far it’s the only plugin script for that case and i cant built my own … i tried it but it might be easier if there would be a list of the cmd changes of the new wp releases.. i think thats the only reason for errors in that skript

function zm_popular_categories($zmpc_days = 30, $zmpc_title = 0, $zmpc_limit = 10, $zmpc_shownumber = 0, $zmpc_titlename = '<h2>Popular Categories</h2>', $zmpc_pretags = '<div class="headlines">' , $zmpc_posttags = '</div>', $zmpc_prelist = '<span style="float: right;">', $zmpc_postlist = '</span>', $zmpc_countsepstart = '<span>(', $zmpc_countsepend = ' Posts)</span>', $zmpc_return = 0, $zmpc_lastupdated = 0) {
    global $wpdb, $post;

    // Draw posts along with relevant associated category data from database
    $zmpc_posts = $wpdb->get_results("
        SELECT p.ID, p.post_title, p.post_date, c.cat_ID, c.cat_name, p2c.post_id, p2c.category_id
        FROM ($wpdb->posts p LEFT JOIN $wpdb->post2cat p2c on p.ID = p2c.post_id)
            LEFT JOIN $wpdb->categories c ON p2c.category_id = c.cat_ID
        WHERE post_status = 'publish'
            AND p.post_date > DATE_ADD(CURDATE(), INTERVAL -$zmpc_days DAY)
        ORDER BY p.post_date DESC
    ");

    // Initialisations
    $zmpc_catcounts = array();
    $zmpc_caturls = array();

    foreach ($zmpc_posts as $zmpc_post) {
        if (!array_key_exists($zmpc_post->cat_name, $zmpc_catcounts)) {
        $zmpc_catcounts[$zmpc_post->cat_name] = 1;
        $zmpc_caturls[get_category_link($zmpc_post->cat_ID)] = 1;
        }
        else {
        $zmpc_catcounts[$zmpc_post->cat_name]++;
        $zmpc_caturls[get_category_link($zmpc_post->cat_ID)]++;
        }
    }
    arsort($zmpc_catcounts);
    arsort($zmpc_caturls);

    $zmpc_cattitles = array_keys($zmpc_catcounts);
    $zmpc_permalinks = array_keys($zmpc_caturls);

    $zmpc_travelcount = 0;

    $html_out .=
        '<div class="zm_pop_cats">';

    if ($zmpc_title) {
        $html_out .=
        $zmpc_titlename;
    }
    $html_out .=
            $zmpc_prelist;

    foreach ($zmpc_catcounts as $zmpc_catcount) {
        $html_out .=
                $zmpc_pretags;
        $html_out .=
                    '<a href="'.$zmpc_permalinks[$zmpc_travelcount].'">'.$zmpc_cattitles[$zmpc_travelcount].'</a>';
        if ($zmpc_shownumber) {
        $html_out .=    $zmpc_countsepstart;
        $html_out .=        $zmpc_catcount;
        $html_out .=    $zmpc_countsepend;
        }
        $html_out .=
                $zmpc_posttags;
        $zmpc_travelcount++;
        if ($zmpc_travelcount >= $zmpc_limit) break;
    }

    $html_out .=
            $zmpc_postlist;
    $html_out .=
        '</div>';        

    if($zmpc_return)
        return $html_out;
    else
        echo $html_out;
}

?>

so where are the failures ?
its a short but usefull skript , even because ive found nothing similar to that!