[Plugin: Facebook Like Button] Reply to Comments conflict

When I activate the Facebook Like Plugin my users are unable to reply to comments left by other users. Not sure why this is happening. The code to reply to comments looks like this:

<div class="act tip">
        <?php if(comments_open()): ?>
         <?php if (function_exists('comment_reply_link')): ?>
         <span class="button reply"><?php comment_reply_link(array_merge( $args, array('add_below' => 'commentbody', 'depth' => $depth, 'max_depth' => $args['max_depth'], 'reply_text' => '<span><span>'.__('Reply','fusion').'</span></span>'.$my_comment_count))) ?></span>
         <?php endif; ?>
        <span class="button quote"><a title="<?php _e('Quote','fusion'); ?>" href="javascript:void(0);" onclick="MGJS_CMT.quote('commentauthor-<?php comment_ID() ?>', 'comment-<?php comment_ID() ?>', 'commentbody-<?php comment_ID() ?>', 'comment');"><span><span><?php _e('Quote','fusion'); ?></span></span></a></span>
        <?php endif; ?>
        <?php edit_comment_link('<span><span>'.__("Edit","fusion").'</span></span>','<span class="button submit">','</span>'); ?>
       </div>

Thanks