Howdy,

>2003-02-19 01:26:43 ApplicationDispatcher[] Servlet.service() for servlet
>jsp threw exception javax.servlet.ServletException:
>/templates/gaggle/html/systemError.jsp
>at
>org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.j
>ava:211)
>at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)

That one is very difficult for us to diagnose unless you post the JSP 
(systemError.jsp) source.

>2003-02-19 09:57:37 StandardManager[] Cannot serialize session attribute
>GAGGLE$STATE for session 54279C61F055148C959AE9D7B7B51962
>java.io.NotSerializableException: com.gaggle.util.Services

Tomcat serializes sessions to disk.  That requires that the session 
(javax.servlet.http.HttpSession is the interface, tomcat has an implementation and a 
façade) implement java.io.Serializable.  Moreover, it requires that anything put in a 
session attribute be serializable as well.  As the above message shows, 
com.gaggle.util.Services does not implement java.io.Serializable.

You will need to modify the code to either:
- Have com.gaggle.util.Services be serializable
- Don't stick instances of com.gaggle.util.Services in the session

Yoav Shapira
Millennium ChemInformatics



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