Having the same problem but I don't seem to have the same theme layer code to alter, even though I'm working from the same one as the poster above. All I have is this:

function EntryPage::print_comment_partial( Comment c )
{
    var string subject = $c.subject ? $c.subject : $*text_nosubject;
    var string date = $c->time_display("long", "");
    var string poster = isnull $c.poster ? $*text_poster_anonymous : $c.poster->as_string();

    print safe """<a href="$c.permalink_url">$subject</a> - $poster on $date""";
    var Link expand_link = $c->get_link("expand_comments");
    if ($c.thread_url != "" and defined $expand_link) {
        " " + $c->expand_link();
    }
}

And this:

###$comment->print_reply_link({"linktext" => $*text_comment_reply}); 

        if($comment.screened == true) {
            ### if comment screened - show link for unscreen
            var Link link;
            $link = $comment->get_link("unscreen_to_reply");
            """<a href="$link.url" title="$link.caption">$link.caption</a>""";
        } else {
            ### showing reply link if comment not screened
            $comment->print_reply_link({ "linktext" => $*text_comment_reply });
        }

        
        ") ";
    }

    if ($comment.parent_url != "")
    {
        "(<a href='$comment.parent_url'>$*text_comment_parent</a>) ";
    }

    if ($comment.thread_url != "")
    {
        """(<a href="$comment.thread_url">$*text_comment_thread</a>) """;
        var Link expand_link = $comment->get_link("expand_comments");
        if (defined $expand_link) {
            "(" + $comment->expand_link() + ") ";
        }
    }

So what exactly would I need to alter (and with what code specifically) to make this work? Thanks in advance. :)