"The viewing session is not available or has expired"

I will start off by saying that I am not terribly experienced at using BIRT, but I am in the situation where I need to essentially copy over the relevant files from one project to another. I have gotten to the point where I get the parameters page with my two needed inputs, but it gives me the following errors after:
DEBUG org.apache.axis.EXCEPTIONS - AxisFault:
AxisFault
faultCode: BirtSoapBindingImpl.getUpdatedObjects( )
faultSubcode:
faultString: The viewing session is not available or has expired.
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace:
at org.eclipse.birt.report.soapengine.endpoint.BirtSoapBindingImpl.getUpdatedObjects(BirtSoapBindingImpl.java:38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:397)
at org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186)
at org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:323)
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
at org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:454)
at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)
at org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699)
at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.doPost(BirtSoapMessageDispatcherServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.service(BirtSoapMessageDispatcherServlet.java:122)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at ...

This is being used with spring 3.x on Tomcat. Can someone offer me an idea of what I need to look for? I haven't found much in the way of help regarding this error message.
Thanks for any help.

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Comments

mwilliams

So, you're able to get to the report parameter page, but no further? Does this happen on all browsers? Also, is this for all reports?

rem955

<blockquote class='ipsBlockquote' data-author="'mwilliams'" data-cid="110178" data-time="1349455833" data-date="05 October 2012 - 09:50 AM">
So, you're able to get to the report parameter page, but no further? Does this happen on all browsers? Also, is this for all reports? </blockquote>
 
This is a pre-existing project that I am trying to integrate BIRT into. There are no other reports. This is the first. I have gotten to the point that the report runs. I have found the missing files required. My problem now is that the report is empty. The header is there, but nothing is shown below. The logs show that when I call the subclass of ScriptedDataSetEventAdapter's initReportData method that it is called, but stops when I try to put the parameter "year" in the logs. I call this parameter using reportContext.getParameterValue("year"). Can I guess that this report design file is faulty or could there be another issue? 
 
Edit: 
Further analysis suggests that the afterRender method is being called on the ReportEventAdapter subclass after the parameter is called.

mwilliams

Ok, so where are you at with the report, now? Can you attach the report?

rem955

<blockquote class='ipsBlockquote' data-author="'mwilliams'" data-cid="110250" data-time="1349739829" data-date="08 October 2012 - 04:43 PM">
Ok, so where are you at with the report, now? Can you attach the report? </blockquote>
I actually fixed it. It was just a silly error in the xml I mistyped. Sorry about that.

mwilliams

It's all good. That's better than something you can't find!

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