In case anyone else is trying to get comments working with d3forum v0.85 here are some things that I have figured out to get it working:
1.On the d3forum forum that you have set up for the weblink comments, edit the forum and in the "Format for comment-integration" section put:
2.There is an error in the class\weblinks_template.php file around line 440 or so. Make the following change:
//$text = $tpl->fetch( $this->_get_parts_file( 'd3forum_comment.html' ) );
$text = $tpl->fetch( $this->_get_parts_file( 'weblinks_d3forum_comment.html' ) );
Hopefully, you should now be good to go!