Right sidebar does not appear

[sirexile]

I get this error message when attempting to use the right sidebar:

Warning: Missing argument 4 for efContentRightSidebarTag() in /home/hypergam/public_html/hgn/wiki/skins/monaco/ContentRightSidebar.php on line 42

This is what i have in my localsettings.php at the bottom for the skin:

Skin

require_once("$IP/skins/monaco/monaco.php");
require_once("$IP/skins/monaco/animonaco.php");
require_once("$IP/skins/monaco/ExtendedBodyAttributes.php");
require_once("$IP/skins/monaco/ContentRightSidebar.php");

require_once "$IP/extensions/Configure/Configure.php";

Code i enter is listed in the readme:

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