Hi there, I was wondeing if there was a way be able to help me troubleshoot this issue. On the front page of a client's website, I get the following error:

Error parsing XSLT file: \xslt\ServiceSelection.xslt. 

Based on some preliminary research that I have done, I was believe that the issue here might lie with the NiceURL bit. I added the debug parameters to the URL and was able to find this all in bold red:

umbracoMacro InnerException

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.Double.System.IConvertible.ToInt32(IFormatProvider provider)
  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:\WEBSITES_Test\lfh.switchfast.net\xslt\ServiceSelection.xslt:line 31
  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, XmlSequenceWriter results)
  at System.Xml.Xsl.XmlILCommand.Execute(Object defaultDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter writer)
  at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, XmlWriter results, XmlResolver documentResolver)
  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)

As a result, I was wondering if there's a way to be able to pin-point the issue. My \xslt\ServiceSelection.xslt code looks like the following:

<?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" xmlns:tagsLib="urn:tagsLib" xmlns:BlogLibrary="urn:BlogLibrary" xmlns:PS.XSLTsearch="urn:PS.XSLTsearch" 
  exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets tagsLib BlogLibrary PS.XSLTsearch ">

<xsl:output method="xml" omit-xml-declaration="yes"/>
<xsl:param name="currentPage"/>
<xsl:template match="/">
<xsl:if test="$currentPage/serviceBox != ''">
    <xsl:variable name="selectedTribute" select="umbraco.library:GetXmlNodeById($currentPage/serviceBox)"/>
    <h2>Service for... <i class="white"><xsl:value-of select="$selectedTribute/animalName" disable-output-escaping="yes"/></i></h2>
<xsl:if test="$selectedTribute/animalThumbnail != ''">
  <div class="thumbnail">
      <img>
    <xsl:attribute name="src">/usercontrols/imageTool.ashx?minheight=95&amp;minwidth=95&amp;image=<xsl:value-of select="$selectedTribute/animalThumbnail "/></xsl:attribute>
      </img>
  </div>
</xsl:if>
    <p><xsl:value-of select="umbraco.library:TruncateString($selectedTribute/eventSummary, 150, '...')" disable-output-escaping="yes"/>
    </p>
    <p class="readmore"><a href="{umbraco.library:NiceUrl($selectedTribute/@id)}">READ MORE ></a></p>
    
  </xsl:if>

</xsl:template>
</xsl:stylesheet>

Any <?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" xmlns:tagsLib="urn:tagsLib" xmlns:BlogLibrary="urn:BlogLibrary" xmlns:PS.XSLTsearch="urn:PS.XSLTsearch" 
  exclude-result-prefixes="msxml umbraco.library Exslt.ExsltCommon Exslt.ExsltDatesAndTimes Exslt.ExsltMath Exslt.ExsltRegularExpressions Exslt.ExsltStrings Exslt.ExsltSets tagsLib BlogLibrary PS.XSLTsearch ">


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

<xsl:param name="currentPage"/>

<xsl:template match="/">

<xsl:if test="$currentPage/serviceBox != ''">
    <xsl:variable name="selectedTribute" select="umbraco.library:GetXmlNodeById($currentPage/serviceBox)"/>

    <h2>Service for... <i class="white"><xsl:value-of select="$selectedTribute/animalName" disable-output-escaping="yes"/></i></h2>
<xsl:if test="$selectedTribute/animalThumbnail != ''">
  <div class="thumbnail">
      <img>
    <xsl:attribute name="src">/usercontrols/imageTool.ashx?minheight=95&amp;minwidth=95&amp;image=<xsl:value-of select="$selectedTribute/animalThumbnail "/></xsl:attribute>
      </img>
  </div>
</xsl:if>

    <p><xsl:value-of select="umbraco.library:TruncateString($selectedTribute/eventSummary, 150, '...')" disable-output-escaping="yes"/>
    </p>
    <p class="readmore"><a href="{umbraco.library:NiceUrl($selectedTribute/@id)}">READ MORE ></a></p>

  </xsl:if>


</xsl:template>

</xsl:stylesheet>

I am running Umbraco v. 4 with ASP.NET v.4 in a Windows IIS 6. environment.

Any help would be greatly appreciated!