Hi Kevin

Thanks for the heads-up.  Here is the updated xslt file.  This package is due a revamp for 4.1, so I'll address this then.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [ <!ENTITY nbsp "&#x00A0;"> ]>
<xsl:stylesheet 
   version="1.0" 
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
 xmlns:msxml="urn:schemas-microsoft-com:xslt"
  xmlns:umbraco.library="urn:umbraco.library" xmlns:Exslt.ExsltCommon="urn:Exslt.ExsltCommon" xmlns:Exslt.ExsltDatesAndTimes="urn:Exslt.ExsltDatesAndTimes" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltRegularExpressions="urn:Exslt.ExsltRegularExpressions" xmlns:Exslt.ExsltStrings="urn:Exslt.ExsltStrings" xmlns:Exslt.ExsltSets="urn:Exslt.ExsltSets" 
  exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets ">


<xsl:output method="xml" omit-xml-declaration="yes"/>

<xsl:param name="currentPage"/>

<xsl:template match="/">

    <!-- 
      Find the homepage (the topmost node in this tree section, with a doctype alias of 'homepage')
 -->
    <xsl:variable name="homePageNode" select="$currentPage/ancestor-or-self::root/node [@nodeTypeAlias='Homepage']" />
  
  
  <ul class="nav">
        <!-- we can assume that we'll need a homepage link in this nav -->
      <li>
            <xsl:if test="$homePageNode/@id = $currentPage/@id">
                <xsl:attribute name="class">current</xsl:attribute>
           </xsl:if>
           <!-- NiceUrl takes a node ID and gives us a 'nice url' to the page -->
          <a href="{umbraco.library:NiceUrl($homePageNode/@id)}">
             <xsl:value-of select="$homePageNode/@nodeName" />
           </a>
        </li>
       
      <!-- this loop takes all of the direct children of the homepage that aren't currently hidden -->
        <xsl:for-each select="$homePageNode/node [string(./data [@alias='umbracoNaviHide']) != '1']">
           
          <li>
                <!-- a test to set the class of the link to the current page to 'current' 
             
                  basically it says:  If the current page or one if its parents has a node id equal to the id of the current page, 
                 set class to current
              -->
                <xsl:if test="$currentPage/ancestor-or-self::node/@id = current()/@id">
                 <xsl:attribute name="class">current</xsl:attribute>
               </xsl:if>
               <a href="{umbraco.library:NiceUrl(current()/@id)}">
                 <xsl:value-of select="current()/@nodeName" />
               </a>
            </li>
           
      </xsl:for-each>
     
      
  </ul>
   
</xsl:template>

</xsl:stylesheet>

Dan