How do I call comments_template(); from a plugin file?

from the wordpress codex:

 comments_template();
 //Loads the comment template. For use in single Post and Page displays. 
 //Will not work outside of single displays unless $withcomments is set to "1".

my bet is that you need that ->$withcomments thingy

<?php
global $withcomments;
$withcomments = true;
comments_template();
?>

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)