XmlDSig and XAdES schema validation

Hi all,
>
how to validate xades xml against xades and xmlsig schemas? i have
this sample:
>
XmlTextReader xmlReader = new XmlTextReader(@"..\..\Data\xades_zep-
epes.xml");
XmlReaderSettings settings = new XmlReaderSettings();
settings.ProhibitDtd = false;
settings.ValidationType = ValidationType.Schema;
settings.ValidationFlags = settings.ValidationFlags |
XmlSchemaValidationFlags.ReportValidationWarnings;
settings.ValidationEventHandler += new
System.Xml.Schema.ValidationEventHandler(settings_ ValidationEventHandler);
>
settings.Schemas.Add("http://www.w3.org/2000/09/xmldsig#",
XmlReader.Create(@"..\..\Data\xmldsig-core-schema.xsd", settings));
settings.Schemas.Add("http://uri.etsi.org/01903/v1.3.2#", @"..\..\Data
\XAdES.xsd");
>
using (XmlReader valReader = XmlReader.Create(xmlReader, settings))
{
while (valReader.Read()) { };
>
}
>
This code fails on "using (XmlReader valReader =
XmlReader.Create(xmlReader, settings))" with
XmlSchemaValidationException saying:
>
"Invalid particle derivation by restriction - 'The derived elementhttp://uri.etsi.org/01903/v1.3.2#:Includeat (113, 12) is not a valid
restriction of the base choice particle at (95, 8) according to
Elt:All/Choice/Sequence -- RecurseAsIfGroup.'."
>
Is something wrong with my code, or schema (which is from
uri.etsi.org) or ms implementation?
Can anybody help me?
>
Many many thax...
Marian.