My daily SharePoint frustration - XIV

Error: I can't get xsxsl extension to work within DataFormWebPart's XSL:

Error while executing web part: System.Xml.Xsl.XslTransformException: Execution of scripts was prohibited. Use the XsltSettings.EnableScript property to enable it.

...em.Xml.Xsl.XmlILCommand.Execute(IXPathNavigable contextDocument, XmlResolver dataSources, XsltArgumentList argumentList, XmlWriter results) at System.Xml.Xsl.XslCompiledTransform.Transform(IXPathNavigable input, XsltArgumentList arguments, Stream results) at Microsoft.SharePoint.WebPartPages.DataFormWebPart.ExecuteTransform(XslCompiledTransform xslCompiledTransform, XsltArgumentList xmlArguments) at Microsoft.SharePoint.WebPartPages.DataFormWebPart.PrepareAndPerformTransform()


No resolution.