Hi,

I've upgraded my Umbraco from 4.5.2 to 4.7.11 and one of my macro is now giving me this error :

Value was either too large or too small for an Int32.
Value was either too large or too small for an Int32.
  at System.Convert.ToInt32(Double value)
  at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
  at System.Xml.Xsl.Runtime.XmlQueryRuntime.ChangeTypeXsltArgument(XmlQueryType xmlType, Object value, Type destinationType)
  at System.Xml.Xsl.Runtime.XmlQueryContext.InvokeXsltLateBoundFunction(String name, String namespaceUri, IList`1[] args)
  at System.Xml.Xsl.CompiledQuery.Query.<xsl:template match="/">(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime, XPathNavigator {urn:schemas-microsoft-com:xslt-debug}current, Double {urn:schemas-microsoft-com:xslt-debug}position, Double {urn:schemas-microsoft-com:xslt-debug}last, IList`1 {urn:schemas-microsoft-com:xslt-debug}namespaces) in C:\inetpub\website\xslt\WidgetLatestNewsWithNewsletter.xslt:line 57
  at System.Xml.Xsl.CompiledQuery.Query.<xsl:apply-templates>(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime, XPathNavigator , Double , Double )
  at System.Xml.Xsl.CompiledQuery.Query.Root(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
  at System.Xml.Xsl.CompiledQuery.Query.Execute(XmlQueryRuntime {urn:schemas-microsoft-com:xslt-debug}runtime)
  at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer)
  at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, TextWriter results)
  at umbraco.macro.GetXsltTransformResult(XmlDocument macroXML, XslCompiledTransform xslt, Dictionary`2 parameters)
  at umbraco.macro.loadMacroXSLT(macro macro, MacroModel model, Hashtable pageElements)

here's the xslt file :

<?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:if test="$currentPage/@level &gt; 1">

      <xsl:variable name="fixedHref" >
        <xsl:call-template name="fixRssHref">
          <xsl:with-param name="niceUrl">
            <xsl:value-of select="umbraco.library:NiceUrl($currentPage/ancestor-or-self::* [@level = 2]//NewsArea/NewsPage/@id)" />

          </xsl:with-param>
        </xsl:call-template>
      </xsl:variable>

      <xsl:variable name="newsletterPage" select="$currentPage/ancestor-or-self:: * [@isDoc and @level = 2]//NewsLetterPage/@id"/>
      <!-- Classic Dual header -->
      <div class="mod classic lastnews">

        <b class="top">
          <b class="tl">
            <xsl:text> </xsl:text>
          </b>
          <b class="tr">
            <xsl:text> </xsl:text>
          </b>
        </b>
        <div class="inner shadow">

          <div class="hd newspaper">
            <a href="{concat($fixedHref, '/newsrss.aspx')}" class="rssLink">
              <xsl:value-of select="umbraco.library:GetDictionaryItem('rss')"/>
            </a>
            <h3>
              <xsl:value-of select="umbraco.library:GetDictionaryItem('latest_news')"/>
            </h3>
          </div>
          <div class="bd">
            <div class="preview">
              <xsl:for-each select="$currentPage/ancestor-or-self:: * [@isDoc and @level = 2]//NewsItem[string(umbracoNaviHide) != '1']">
                <xsl:sort select="date" order="descending"/>
                <xsl:if test="position() = 1">
                  <img src="/umbraco/imagegen.ashx?image={umbraco.library:GetMedia(image,'false')//umbracoFile}&amp;width=205&amp;height=136&amp;pad=true"  width="205" height="136" alt="{@nodeName}" />
                </xsl:if>
              </xsl:for-each>
              <xsl:text> </xsl:text>
            </div>

            <div class="cnt">
              <ul>
                <xsl:for-each select="$currentPage/ancestor-or-self:: * [@isDoc and @level = 2]//NewsItem[string(umbracoNaviHide) != '1']">
                  <xsl:sort select="date" order="descending"/>

                  <xsl:if test="position() &lt; 4">
                    <li>
                      <!--<strong>
                        <xsl:value-of select="umbraco.library:FormatDateTime(date,'dd MMMM yyy')"/>
                      </strong>-->
                      <strong><a href="{umbraco.library:NiceUrl(@id)}">
                        <xsl:value-of select="@nodeName"/>
                        </a></strong>
                      <a href="{umbraco.library:NiceUrl(@id)}">
                        <xsl:value-of select="intro"/>
                        </a>
                    </li>

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

            </div>
            <a href="{umbraco.library:NiceUrl($currentPage/ancestor-or-self:: * [@isDoc and @level = 2]//NewsArea/@id)}" class="moreLnk">
              <xsl:value-of select="umbraco.library:GetDictionaryItem('see_all_news')"/>
            </a>
            <div style="clear:both;">
              <xsl:text> </xsl:text>
            </div>
          </div>

          <div class="hd secondHd bubbles">
            <h3>
              <xsl:value-of select="umbraco.library:GetDictionaryItem('newsletter_keepinformed')"/>
            </h3>
          </div>
          <div class="bd">

            <label>
              <xsl:value-of select="umbraco.library:GetDictionaryItem('newsletter_subscribe')"/> :
            </label>
            <input type="text" id="email" name="email" class="text labelify">
              <xsl:attribute name="title">
              <xsl:value-of select="umbraco.library:GetDictionaryItem('newsletter_email')"/>
              </xsl:attribute>
            </input>

            <button onclick="document.location.href='{umbraco.library:NiceUrl($newsletterPage)}?email=' + document.getElementById('email').value;return false;">
              <span>
                <xsl:value-of select="umbraco.library:GetDictionaryItem('general_go')"/>
              </span>
            </button>


          </div>

        </div>
        <b class="bottom">
          <b class="bl">
            <xsl:text> </xsl:text>
          </b>
          <b class="br">
            <xsl:text> </xsl:text>
          </b>
        </b>
      </div>
      <!-- /Classic Dual header -->

    </xsl:if>
  </xsl:template>


  <xsl:template name="fixRssHref">
    <xsl:param name="niceUrl" />
    <xsl:variable name="indexOfAspx" select="umbraco.library:LastIndexOf($niceUrl, '.aspx')" />

    <xsl:variable name="fixedHref" >
      <xsl:choose>
        <xsl:when test="$indexOfAspx != -1">
          <xsl:value-of select="umbraco.library:Replace($niceUrl, '.aspx', '')" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:value-of select="$niceUrl" />
        </xsl:otherwise>
      </xsl:choose>
    </xsl:variable>

    <xsl:value-of select="$fixedHref" />

  </xsl:template>

</xsl:stylesheet>

Can you tell me what's the problem with it?

Thank you.