After installing IMan v5 PU 10, we are frequently getting the following error in designer:
Error - The session state has been reset. Please close this page and reload your job, all changes have been lost.
Error Stack Trace
   at Realisable.IManWebUI.TransformSetup.Page_Init(Object sender, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnInit(EventArgs e)
   at System.Web.UI.Page.OnInit(EventArgs e)
   at System.Web.UI.Control.d__225.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Util.WithinCancellableCallbackTaskAwaitable.WithinCancellableCallbackTaskAwaiter.GetResult()
   at System.Web.UI.Page.d__523.MoveNext()

This occurs in the designer any time another job starts in the scheduler while I am working in the designer.