ExportToStream method no longer returns System.IO.MemoryStream in cr vs 2010 latest run time 11 - platform windows 8.1 .net 4

Dear All,

         I recently downloaded the latest crystal report for visual studio 2010 run time (v 11) installed on my

windows 8.1 with visual studio 2010 pc

everything was fine but suddenly the error that described in the below

link happened

ExportToStream method no longer returns System.IO.MemoryStream in CR 2008 SP5

and i can see there is no resolution provided by sap to this issue

exactly the same issue

oStream = (MemoryStream)

  cr.ExportToStream(

  CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);

i revered back to the v10 by uninstalling 11 everything is fine now

Any luck or resolution for the version v11?