Validation problem again !

Hi,
I am trying to write a xml document which can validate against the
following schema:
http://www.extxml.org/Schemas/v2_0/eXTSchema.xsd

My document looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<eXT xmlns='http://www.extxml.org/Schemas/v2_0/eXTSchema'
     xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
     xsi:schemaLocation="http://www.extxml.org/Schemas/v2_0/eXTSchema
http://www.extxml.org/Schemas/v2_0/eXTSchema.xsd"
     schemaVersion="1.0" author="eXT JumpStart"
     time="11:11:14" language="en" date="6-9-2000">
<ProductDef id="id1" name="assembly" version="1">
<Representation id="id151" name="car_id151" format="eXT"
revision="0" location="car_id151.xml" load="TRUE"/>
</ProductDef>
</eXT>

I tried parse the above document using xerces-c parser, and got the
following error:
Unknown base type xsd:anyURI for type EntityRefType.

Is the problem with schema or validator, or my document?

Thanks,
Prakash.

--

Prakash Reddy Bande
email Prakash.Bande@sdrc.com
Ext.124,Ph.+91-2139-33666
Structural Dynamics Research Corporation
Product Groups - India