Hi Guys,

I am experiencing something a little bit strange. I have this Xslt Macro that I am trying to save. But saving this Xslt crashes my entire IIS. At first I saw that a process called DW20.exe was fired off in up to five instances and hogged all CPU power. I found out that this was caused by Windows Error Reporting. So I disabled that and installed the Debug Diagnostics Tool from Microsoft. I do get a dump report, but I can't really find anything in there.

I think it is a rather extreme way to handle the error. So I tried to load the Umbraco source and run that in Debug mode and see what happened. But I couldn't really figure out how to do that... (do I need to do anything special?)

Anyhow... I am running out of ideas here, and can't really get an error message that can help me resolve this issue. My Xslt looks like this:

In my Document Type I have 5 content pickers, that each are used to select a featured page:

<xsl:variable name="F1_id" select="$currentPage/data [@alias = 'Feature1']" />

I have tried to add checks to ensure that a content item is actually selected.

<xsl:if test="number($F1_id) &gt; 0">

And then make sure that it actually is a content node.

<xsl:variable name="F1" select="umbraco.library:GetXmlNodeById(number($F1_id))" />

<xsl:if test="string-length($F1/@nodeName) &gt; 0">

This is my entire Xslt:

<?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="/">

    <xsl:variable name="F1_id" select="$currentPage/data [@alias = 'Feature1']" />
    <xsl:variable name="F2_id" select="$currentPage/data [@alias = 'Feature2']" />
    <xsl:variable name="F3_id" select="$currentPage/data [@alias = 'Feature3']" />
    <xsl:variable name="F4_id" select="$currentPage/data [@alias = 'Feature4']" />
    <xsl:variable name="F5_id" select="$currentPage/data [@alias = 'Feature5']" />

    <div id="home_featured">
      <div class="main_image">

        <xsl:if test="number($F1_id) &gt; 0">

          <xsl:variable name="F1" select="umbraco.library:GetXmlNodeById(number($F1_id))" />

          <xsl:if test="string-length($F1/@nodeName) &gt; 0">

          <!-- create a variable to store the media ID -->
          <xsl:variable name="mediaId" select="$F1/data [@alias='Thumbnail']" />

          <!-- now check the ID is a number -->
          <xsl:choose>
            <xsl:when test="number($mediaId) &gt; 0">
              <!-- Now we know we have an ID, store the umbraco.library:GetMedia() in a variable, this way we can reuse it -->
              <!-- Note here we have an additional parameter, when set to false() it will return just that node, if set to true it    will return that node and it's children, this is useful for getting media folders -->
              <xsl:variable name="mediaNode" select="umbraco.library:GetMedia($mediaId, false())" />

              <!-- Now check that the retrieved media url string has a length otherwise we will be outputting a blank string -->
              <!-- This is held in the "/data[@alias = 'umbracoFile']" as GetMedia returns a media node-->
              <xsl:if test="string-length($mediaNode/data[@alias = 'umbracoFile']) &gt; 0">
                <!-- output our safely found media url into our link, using inline XSLT between the {...} -->

                <xsl:variable name="image" select="$mediaNode/data[@alias = 'umbracoFile']" />

                <img>
                  <xsl:attribute name="src">
                    <xsl:text>/umbraco/ImageGen.ashx?image=</xsl:text>
                    <xsl:value-of select="$image"/>
                    <xsl:text>&amp;width=614&amp;height=381</xsl:text>
                  </xsl:attribute>
                </img>

              </xsl:if>
            </xsl:when>
          </xsl:choose>

          <div class="desc">
            <a href="#" class="collapse">Close Me!</a>

            <div class="block">
              <h2>
                <a href="{umbraco.library:NiceUrl($F1/@id)}" title="{$F1/@nodeName}">
                  <xsl:value-of select="$F1/@nodeName"/> ...
                </a>
              </h2>
              <p>
                <xsl:value-of select="$F1/data [@alias = 'Abstract']"/> ...<br /><a href="{umbraco.library:NiceUrl($F1/@id)}" title="{$F1/@nodeName}">Read More...</a>
              </p>
            </div>
          </div>

          </xsl:if>
        </xsl:if>

      </div>
      <!-- main_image -->

      <div class="image_thumb">
          <ul>

            <xsl:if test="number($F1_id) &gt; 0">
              <xsl:apply-templates select="umbraco.library:GetXmlNodeById($currentPage/data [@alias = 'Feature1'])" />
            </xsl:if>
            <xsl:if test="number($F2_id) &gt; 0">
              <xsl:apply-templates select="umbraco.library:GetXmlNodeById($currentPage/data [@alias = 'Feature2'])" />
            </xsl:if>
            <xsl:if test="number($F3_id) &gt; 0">
              <xsl:apply-templates select="umbraco.library:GetXmlNodeById($currentPage/data [@alias = 'Feature3'])" />
            </xsl:if>
            <xsl:if test="number($F4_id) &gt; 0">
              <xsl:apply-templates select="umbraco.library:GetXmlNodeById($currentPage/data [@alias = 'Feature4'])" />
            </xsl:if>
            <xsl:if test="number($F5_id) &gt; 0">
              <xsl:apply-templates select="umbraco.library:GetXmlNodeById($currentPage/data [@alias = 'Feature5'])" />
            </xsl:if>

          </ul>
        </div>
        <!-- image_thumb -->
      </div>
    <!-- home_featured -->

  </xsl:template>

  <xsl:template match="node">
    <li>
      <!-- create a variable to store the media ID -->
      <xsl:variable name="mediaId" select="data [@alias='Thumbnail']" />

      <!-- now check the ID is a number -->
      <xsl:choose>
        <xsl:when test="number($mediaId) &gt; 0">
          <!-- Now we know we have an ID, store the umbraco.library:GetMedia() in a variable, this way we can reuse it -->
          <!-- Note here we have an additional parameter, when set to false() it will return just that node, if set to true it    will return that node and it's children, this is useful for getting media folders -->
          <xsl:variable name="mediaNode" select="umbraco.library:GetMedia($mediaId, false())" />

          <!-- Now check that the retrieved media url string has a length otherwise we will be outputting a blank string -->
          <!-- This is held in the "/data[@alias = 'umbracoFile']" as GetMedia returns a media node-->
          <xsl:if test="string-length($mediaNode/data[@alias = 'umbracoFile']) &gt; 0">
            <!-- output our safely found media url into our link, using inline XSLT between the {...} -->

            <xsl:variable name="image" select="$mediaNode/data[@alias = 'umbracoFile']" />

            <a>
              <xsl:attribute name="href">
                <xsl:text>/umbraco/ImageGen.ashx?image=</xsl:text>
                <xsl:value-of select="$image"/>
                <xsl:text>&amp;width=614&amp;height=381</xsl:text>
              </xsl:attribute>

              <img>
                <xsl:attribute name="src">
                  <xsl:text>/umbraco/ImageGen.ashx?image=</xsl:text>
                  <xsl:value-of select="$image"/>
                  <xsl:text>&amp;width=50&amp;height=38</xsl:text>
                </xsl:attribute>
              </img>
            </a>

          </xsl:if>
        </xsl:when>
      </xsl:choose>

      <div class="block">
        <h2>
          <a href="{umbraco.library:NiceUrl(@id)}" title="{@nodeName}">
            <xsl:value-of select="@nodeName"/> ...
          </a>
        </h2>
        <small>July 15, 2009</small>
        <p>
          <xsl:value-of select="data [@alias = 'Abstract']"/> ...<br /><a href="{umbraco.library:NiceUrl(@id)}" title="{@nodeName}">Read More...</a>
        </p>
      </div>
    </li>
  </xsl:template>

</xsl:stylesheet>