[xmlsec] Reference URI value failing? [SEC=UNCLASSIFIED]

[Cartland, Bruce]

Apologies if I'm missing something basic.

When I leave this blank (<Reference URI="">, a signature value and
digest get generated (for the entire envelope?).

However, I get this error if I put in a relative reference to another
node (this works in the Axis2c framework).

func=xmlSecXPathDataExecute:file=..\src\xpath.c:line=273:obj=unknown:sub
j=xmlXPtrEval:error=5:libxml2 library function
failed:expr=xpointer(id('fred'))


Partial xml is ..
		<o:Security s:mustUnderstand="1"
xmlns:o="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecur
ity-secext-1.0.xsd">
			<u:Timestamp u:Id="fred">
	
<u:Created>2011-02-07T03:01:36.046Z</u:Created>
	
<u:Expires>2011-02-07T03:06:36.046Z</u:Expires>
			</u:Timestamp>
			<Signature
xmlns="http://www.w3.org/2000/09/xmldsig#">
				<SignedInfo>
					<CanonicalizationMethod
Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
					<SignatureMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
					<Reference URI="#fred">
						<Transforms>
							<Transform
Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
						</Transforms>
						<DigestMethod
Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
						<DigestValue/>
					</Reference>


thanks
Bruce 
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