System.Xml.Xsl.XsltException: Cannot find the script or external object that implements prefix 'sc'.
at System.Xml.Xsl.XsltCompileContext.ResolveFunction(String prefix, String name, XPathResultType[] argTypes)
at System.Xml.XPath.XsltFunction.get_Function()
at System.Xml.XPath.XsltFunction.ReturnType()
at System.Xml.XPath.CompiledXpathExpr.get_ReturnType()
at System.Xml.Xsl.Processor.RunQuery(ActionFrame context, Int32 key)
at System.Xml.Xsl.VariableAction.Execute(Processor processor, ActionFrame frame)
at System.Xml.Xsl.ActionFrame.Execute(Processor processor)
at System.Xml.Xsl.Processor.Execute()
at System.Xml.Xsl.XslTransform.Transform(XPathNavigator input, XsltArgumentList args, TextWriter output, XmlResolver resolver)
at Sitecore.WebControls.XslFile.DoRender(HtmlTextWriter output)

Xsl file could not be processed: /xsl/alto/htmlHeader.xslt

System.Xml.Xsl.XsltException: Cannot find the script or external object that implements prefix 'sc'.
at System.Xml.Xsl.XsltCompileContext.ResolveFunction(String prefix, String name, XPathResultType[] argTypes)
at System.Xml.XPath.XsltFunction.get_Function()
at System.Xml.XPath.XsltFunction.ReturnType()
at System.Xml.XPath.BooleanFunctions.toBoolean(XPathNavigator qyContext, XPathNodeIterator iterator)
at System.Xml.XPath.BooleanFunctions.getValue(XPathNavigator qy, XPathNodeIterator iterator)
at System.Xml.XPath.XPathNavigator.Evaluate(XPathExpression expr, XPathNodeIterator context)
at System.Xml.Xsl.Processor.EvaluateBoolean(ActionFrame context, Int32 key)
at System.Xml.Xsl.IfAction.Execute(Processor processor, ActionFrame frame)
at System.Xml.Xsl.ActionFrame.Execute(Processor processor)
at System.Xml.Xsl.Processor.Execute()
at System.Xml.Xsl.XslTransform.Transform(XPathNavigator input, XsltArgumentList args, TextWriter output, XmlResolver resolver)
at Sitecore.WebControls.XslFile.DoRender(HtmlTextWriter output)

Xsl file could not be processed: /xsl/alto/header.xslt

Xsl file could not be processed: /xsl/alto/leftMenu.xslt

System.Xml.Xsl.XsltException: Cannot find the script or external object that implements prefix 'sc'.
at System.Xml.Xsl.XsltCompileContext.ResolveFunction(String prefix, String name, XPathResultType[] argTypes)
at System.Xml.XPath.XsltFunction.get_Function()
at System.Xml.XPath.XsltFunction.ReturnType()
at System.Xml.XPath.XPathNavigator.Evaluate(XPathExpression expr, XPathNodeIterator context)
at System.Xml.Xsl.Processor.ValueOf(ActionFrame context, Int32 key)
at System.Xml.Xsl.ValueOfAction.Execute(Processor processor, ActionFrame frame)
at System.Xml.Xsl.ActionFrame.Execute(Processor processor)
at System.Xml.Xsl.Processor.Execute()
at System.Xml.Xsl.XslTransform.Transform(XPathNavigator input, XsltArgumentList args, TextWriter output, XmlResolver resolver)
at Sitecore.WebControls.XslFile.DoRender(HtmlTextWriter output)

Xsl file could not be processed: /xsl/alto/worldMapCountryList.xslt

System.Xml.Xsl.XsltException: Cannot find the script or external object that implements prefix 'sc'.
at System.Xml.Xsl.XsltCompileContext.ResolveFunction(String prefix, String name, XPathResultType[] argTypes)
at System.Xml.XPath.XsltFunction.get_Function()
at System.Xml.XPath.XsltFunction.ReturnType()
at System.Xml.XPath.StringFunctions.toString(XPathNavigator qyContext, XPathNodeIterator iterator)
at System.Xml.XPath.StringFunctions.getValue(XPathNavigator qy, XPathNodeIterator iterator)
at System.Xml.XPath.XPathNavigator.Evaluate(XPathExpression expr, XPathNodeIterator context)
at System.Xml.Xsl.AvtEvent.Output(Processor processor, ActionFrame frame)
at System.Xml.Xsl.CopyCodeAction.Execute(Processor processor, ActionFrame frame)
at System.Xml.Xsl.ActionFrame.Execute(Processor processor)
at System.Xml.Xsl.Processor.Execute()
at System.Xml.Xsl.XslTransform.Transform(XPathNavigator input, XsltArgumentList args, TextWriter output, XmlResolver resolver)
at Sitecore.WebControls.XslFile.DoRender(HtmlTextWriter output)

Xsl file could not be processed: /xsl/alto/footer.xslt