Hi
this worked for me in wordpress 2.8.5
// Hack to switch regular expression for 2.8.5
$pattern = '/img src=(.*)/';
if(!preg_match($pattern, $item['description'], $imgUrlMatches)) {
continue;
}
$url_array = explode(' ',$imgUrlMatches[1]);
$baseurl = str_replace("_m.jpg", "", $url_array[0]);