[xml] XPath question

["Erik F. Andersen" <ea ascott dk>]

Hello!

I use LibXML version 2.6.17 on Windows and I have a problem with an XML document where I cannot get XPath to 
return any nodes.

The start of the XML looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<DenDynamiskeBlanket xmlns="http://www.medcom.dk/DenDynamiskeBlanket/2006-01-30/";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xsi:schemaLocation="http://www.medcom.dk/DenDynamiskeBlanket/2006-01-30/ 
file:/C:/Documents%20and%20Settings/Jacob/workspace/Den%20Dynamiske%20Blanket%20Fremviser/xml/xsds/ddb.xsd">
    <Form>
        <Identifier></Identifier>
        <SentDateTime>2002-02-02T23:23:23</SentDateTime>
        <TypeCode>LÆ255</TypeCode>
        <VersionCode></VersionCode>
        <StatisticalCode></StatisticalCode>
        <PageStock>A4</PageStock>
        <Graphics>

My problem is that no matter what I do I cannot locate any nodes with XPath. I tried registering the 
namespace using xmlXPathRegisterNs (the prefix is nil). Is there a problem with the XML above or am I doing 
something wrong?  If I remove the xmlns attribute I have no problems. I think the XML is wrong but I don't 
know what it is...

Regards,
Erik F. Andersen