I updated Microsoft Solver from V2.1 to 3.1 and it gives me error

Question

Appreciate if you can help me with problem I am having with Microsoft Solver Foundation V3.0 and 3.1
I have been using  en_solver_foundation_standard_edition_V2.1_x86  for past 4 years and did not have any problems – it worked great 
Recently I updated to en_solver_foundation_standard_edition_V3.1_x86  version and same optimization problem which worked in V2.1 gives me
Error with V3.0 and V3.1  when  calling 
            oSolution.GetReport()  with ReportVerbosity.Sensitivity

            Dim report As Report = Nothing
             Dim reportSen As Report = Nothing
             report = oSolution.GetReport(ReportVerbosity.SolverDetails + ReportVerbosity.Decisions)
                  >>> with SolverDetails and Decisions it works fine get report  and NO Error                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                         ``                                                                                                                                           
                                reportSen = oSolution.GetReport(ReportVerbosity.Sensitivity)
                                reportSen = oSolution.GetReport()
                     >>>   with Sensitivity or  All report fails  and get error shown below           
                                Dim file As System.IO.StreamWriter
                                file = My.Computer.FileSystem.OpenTextFileWriter("c:\test.txt", True)
                                reportSen.WriteTo(file)
                                file.Close()

A first chance exception of type 'System.IndexOutOfRangeException' occurred in Microsoft.Solver.Foundation.dll
DefaultSource Error: 2 : Index was outside the bounds of the array.    at Microsoft.SolverFoundation.Services.PluginSolutionMapping.EnsureConstraintToVidMappingInitiated()
   at Microsoft.SolverFoundation.Services.PluginSolutionMapping.GetIndexes(Constraint constraint)
   at Microsoft.SolverFoundation.Services.LinearSolutionMapping.<GetVids>d__2c.MoveNext()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source)
   at Microsoft.SolverFoundation.Services.LinearSolutionMapping.GetShadowPrices(ILinearSolverSensitivityReport sensitivityReport, Constraint constraint)
   at Microsoft.SolverFoundation.Services.LinearSolutionMapping.<GetAllShadowPrices>d__0.MoveNext()
   at Microsoft.SolverFoundation.Services.LinearReport.GenerateReportSensitivity(StringBuilder reportBuilder, IFormatProvider formatProvider)
   at Microsoft.SolverFoundation.Services.LinearReport.GenerateReportSolutionDetails(StringBuilder reportBuilder, IFormatProvider formatProvider, ReportVerbosity verbosity)
   at Microsoft.SolverFoundation.Services.LinearReport.ToString(ReportVerbosity verbosity, IFormatProvider format)
   at Microsoft.SolverFoundation.Services.Report.WriteTo(TextWriter destination)
   at SSIOptmizationSolverV4.cSolver.OptimizeSolution() in D:\VBNET2010\SSIOptimizationV4\SSIOptimizationSolverV4\Classes\cSolver.vb:line 473

I tried to find help on line but did not find anything related to above error and will very much appreciate if you can help me to 
Resolve this issue.