Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/PlLinesHelper.cs
===================================================================
diff -u -r4223 -r4226
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/PlLinesHelper.cs	(.../PlLinesHelper.cs)	(revision 4223)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Common/PlLinesHelper.cs	(.../PlLinesHelper.cs)	(revision 4226)
@@ -110,6 +110,10 @@
     public static PlLines CreatePlLinesForStabilityExpertKnowledge(Location location, SoilGeometryProbability subSoilScenario,
                                                                    double waterLevel, double? waterLevelRiverLow, out UpliftSituation upliftSituation)
     {
+        if (location.CurrentScenario == null)
+        {
+            location.CurrentScenario = location.Scenarios[0];
+        }
         var plLinesCreator = new PlLinesCreator.PlLinesCreator
         {
             WaterLevelRiverLow = waterLevelRiverLow,
@@ -162,6 +166,10 @@
     /// <returns></returns>
     public static PlLines CreatePlLinesForPiping(DateTime timeStepDateTime, Location location, SoilProfile1D soilProfile, double waterLevel)
     {
+        if (location.CurrentScenario == null)
+        {
+            location.CurrentScenario = location.Scenarios[0];
+        }
         var plLinesCreator = new PlLinesCreator.PlLinesCreator
         {
             WaterLevelRiverHigh = waterLevel,