thanks for the reply, I followed the tutorial on extending the websites. base on it i create the page first then create the template page ArticleHolder.php and ArticlePage.php aftter i finished the instruction i build the database and flush it. after doing it i move on applying tha page type ArticleHolder.php on the news, doing that everything is fine but because the News have children page that will be the ArticlePage.php page type. doing it manually will produce the error but if you create the children page everything will be fine.
about the exact error message that's the only thing i get.
and now i'm have another problem and this from the pdf about.
Fatal error: Call to undefined method Member::currentUserID() in C:\xampp\htdocs\silverstripe\cms\code\model\SiteTree.php on line 784.
this is my new problem now.
Strange, Member::currentUserID is defined in most releases - (e.g http://api.silverstripe.org/master/source-class-Member.html#632-645) Want to check your framework/security/Member.php file to ensure that it exists.