Popbox Pop Over in Avatar for custom component

Hi,

In earlier versions of easysocial i used to show avatar in a custom component, and on hover it used to show a popover with other details:

<?php $avtar = FD::user($value->user_id); ?>

<a href="/<?php echo $avtar->getPermalink(); ?>" data-popbox="module://easysocial/profile/popbox" data-popbox-position="bottom-left" data-user-id="<?php echo $avtar->id;?>"> 

    <img alt="<?php echo $avtar->getName();?>" src="/<?php echo $avtar->getAvatar(SOCIAL_AVATAR_SMALL);?>" /> 

</a>

But now after upgrde to ES 2.1 the avatar img & user name is showing but popover is not showing at all.

Has anything changed? can you please help me with this

regards
Sunny