Hello, I have problemas trying to use cas with saml to retrieve AD
attributes. I´m using tomcat 5.5 with cas deployed on it; and I have adapted
an application to log to cas with AD without problems. Now I´m trying to get
user attributes following this page:
http://www.ja-sig.org/wiki/display/CASC/JASIG+Client+SAML+Saml11TicketValidationFilter+Example.
Now, when I run my app, I get redirected to CAS, and I can log in, but when
I´m back to my app, I get the following exception:

AbstractMethodError:
javax.xml.parsers.DocumentBuilderFactory.setFeature(Ljava/lang/String;Z)V
at org.opensaml.XML$ParserPool.<init>(Unknown Source)   
at org.opensaml.XML.<clinit>(Unknown Source)
at org.opensaml.SAMLObject.fromStream(Unknown Source)   
at org.opensaml.SAMLResponse.<init>(Unknown Source)     
at
org.jasig.cas.client.validation.Saml11TicketValidator.parseResponseFromServer(Saml11TicketValidator.java:48)
...

I´ve been looking for a solution, but all the information I have found sais
that the problems must be relationed with an old version of xerces library.
I´m using Xerces 2.9.1, so I think that´s not the problem.

Any help would be appreciated.
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