Non-serializable attribute

[Paulo Cheque]

Hi, I've seen in mainlin-list archive this topic, but there don't have
a response if this 'error' was fixed.
In SVN or CVS has any version without this problem?

Or it is not a bug?

Thanks in advance!
Paulo

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalArgumentException: setAttribute: Non-serializable attribute
	at org.apache.catalina.session.StandardSession.setAttribute(StandardSession.java:1249)
	at org.apache.catalina.session.StandardSessionFacade.setAttribute(StandardSessionFacade.java:129)
	at edu.yale.its.tp.cas.client.filter.CASFilter.doFilter(CASFilter.java:391)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)