[Guy G]

for all the ppl with the error.
use this query instead the one on the file:

$article = $DB_site->query_first("SELECT article.*, articlepost.*, articlecategory.options AS categoryoptions FROM " . TABLE_PREFIX . "article AS article INNER JOIN " . TABLE_PREFIX . "articlepost AS articlepost ON(articlepost.postid = article.firstpostid) INNER JOIN " . TABLE_PREFIX . "articlecategory AS articlecategory ON(articlecategory.categoryid = article.categoryid) WHERE article.articleid = $a AND articlepost.type=1");

By Paul M who helped me....