Attempting to export a report from within StruxureWare Building Operation Workstation results in: "Server Error in '/reporter' Application"

Customer sees the following error when attempting to export a report from within StruxureWare Building Operation Workstation:

TEXT OF ERROR MESSAGE IN BROWSER:
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http://servername/reporter/ReservedReportView...
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Server Error in '/reporter' Application.
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ASP.NET session has expired or could not be found

Description: An unhandled exception occurred during the execution of the current web request.  Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: Microsoft.Reporting.WebForms.AspNetSessionExpiredException: ASP.NET session has expired or could not be found

Source Error:

An unhandled exception was generated during the execution of the current web request.  Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[AspNetSessionExpiredException: ASP.NET session has expired of could not be found]
Microsoft.Reporting.WebForms.ViewerDataOperation..ctor() + 509
Microsoft.Reporting.WebForms.ReportDataOperation..ctor(Boolean requiresFullReportLoad) +33
Microsoft.Reporting.WebForms.HttpHandler.GetHandler(String operationType) +131
Microsoft.Reporting.WebForms.HttpHandler.ProcessRequest(HttpContext context) +162
System.Web.CallHandlerExcectutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +722
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +70
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Version Information: Microsoft .NET Framework Version:4.0.30319.34274
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When looking in the documentation (user guide for SBO) there is a note that appears to be related to this issue as follows:

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NOTE: In some systems, when attempting to export a Report from Building Operation Workstation, rather than downloading the XML file directly, Power Monitoring Expert tries to open a new browser window.  This can result in a unsuccessful download.  If this occurs, contact Schneider Support Services.
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The answer from the software department can be found on page 64 of 124 in the Power Manager 1.0 Integration Manual  - see attachment.

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