Hello, 

We have a simple navigation menu on our portal. 99% of the time it works perfect but sometimes it causes:

'Error parsing XSLT file: \xslt\HomePageNavigation.xslt'. 

The problem is that I got stuck trying to reproduce this issue. It just occurs randomly more likely when user was inactive for some time.

It is not a critical issue but still I would be thankful for any helpful thoughts. 

Thanks.

<?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" select="/.."/>

  <!-- Input the documenttype you want here -->
  <!-- Typically '1' for topnavigtaion and '2' for 2nd level -->
  <!-- Use div elements around this macro combined with css -->
  <!-- for styling the navigation -->
  <xsl:variable name="level" select="1"/>

  <xsl:template match="/">

    <!-- The fun starts here -->
    <ul>
      <xsl:for-each select="$currentPage/ancestor-or-self::* [@isDoc and @level=$level]/* [@isDoc and string(umbracoNaviHide) != '1']">
        <li >
          <a href="{umbraco.library:NiceUrl(@id)}">
            <xsl:if test="$currentPage/ancestor-or-self::*/@id = current()/@id">
              <!-- we're under the item - you can do your own styling here -->
              <xsl:attribute name="class">selected</xsl:attribute>
            </xsl:if>
            <xsl:value-of select="@nodeName"/>
          </a>

        </li>
      </xsl:for-each>
    </ul>

  </xsl:template>

</xsl:stylesheet>