[ 
http://issues.apache.org/jira/browse/TOMAHAWK-412?page=comments#action_12434959 
] 
            
eric commented on TOMAHAWK-412:
-------------------------------

Try to change your web.xml file : add or change this setting 


    <context-param>
        <param-name>org.apache.myfaces.SERIALIZE_STATE_IN_SESSION</param-name>
        <param-value>false</param-value>
    </context-param>


Can you tell me if it works ?

> DefaultTreeModel could be Serializable
> --------------------------------------
>
>                 Key: TOMAHAWK-412
>                 URL: http://issues.apache.org/jira/browse/TOMAHAWK-412
>             Project: MyFaces Tomahawk
>          Issue Type: Bug
>          Components: Tree
>         Environment: Fresh co of trunk from May 3, 2005
>            Reporter: Dennis Byrne
>
> I am redeploying the demo app and getting the following stack trace ...
> SEVERE: IOException while loading persisted sessions: 
> java.io.WriteAbortedException: writing aborted; java.io.NotSerial
> izableException: org.apache.myfaces.custom.tree.model.DefaultTreeModel
> java.io.WriteAbortedException: writing aborted; 
> java.io.NotSerializableException: org.apache.myfaces.custom.tree.model.
> DefaultTreeModel
>         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1303)
>         at 
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912)
>         at 
> java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836)
>         at 
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713)
>         at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
>         at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
>         at 
> org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1371)

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