Server Error in '/' Application.

Error persisting StickySession: SimpleSerialize method returned nothing

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: System.Exception: Error persisting StickySession: SimpleSerialize method returned nothing

Source Error: 


Line 309:                    throw new Exception("Error persisting StickySession: SimpleSerialize method returned nothing");
Line 310:                }
Line 311:            }
Line 312:            else
Line 313:            {

Source File: C:\ja-legacy\Projects\Utilities\Library\src\JA\Session\ActiveStickySession.cs    Line: 311 

Stack Trace: 


[Exception: Error persisting StickySession: SimpleSerialize method returned nothing]
   JA.Session.ActiveStickySession.persist() in C:\ja-legacy\Projects\Utilities\Library\src\JA\Session\ActiveStickySession.cs:311
   JA.Session.WebSession.persist() in C:\ja-legacy\Projects\Utilities\Library\src\JA\Session\WebSession.cs:918
   JA.Session.WebSession.saveSession() in C:\ja-legacy\Projects\Utilities\Library\src\JA\Session\WebSession.cs:902
   JA.Session.WebSession.initSession() in C:\ja-legacy\Projects\Utilities\Library\src\JA\Session\WebSession.cs:644
   Global.Application_AuthorizeRequest(Object sender, EventArgs e) in C:\ja-legacy\Projects\WebApplications\WebApplication\Global.asax.cs:381
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +139
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +88