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From Tim Funk <>
Subject Re: Tomcat 4.1.29 -- SingleSignOn breaks parser?
Date Sun, 16 Nov 2003 15:59:32 GMT
It looks like its barfing during the creation of the valve. (Which gets 
caught and wrapped into some time of XmlException) Turn up the debugging to 
see what happens.

Also make sure the declaration for the SingleSignOnValve is in the correct 
location (inside a Host element.)


Matthew Hunter wrote:
> I'm getting the following exception on startup:
> 2003-11-16 00:40:54.872042500 Catalina.start: java.lang.NullPointerException
> 2003-11-16 00:40:54.872729500 java.lang.NullPointerException 
> 2003-11-16 00:40:54.877649500   at org.apache.commons.digester.Digester.createSAXException(
> By trial and error I have determined that this is related to the 
> SingleSignOn configuration element (ie, the startup succeeds 
> when this element is removed from all hosts, and replacing it 
> in even one host brings back the error):
> <Valve className="org.apache.catalina.authenticator.SingleSignOn" debug="0" />

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