Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityCommonHelper.cs
===================================================================
diff -u -r5310 -r5321
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityCommonHelper.cs	(.../MacroStabilityCommonHelper.cs)	(revision 5310)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityCommonHelper.cs	(.../MacroStabilityCommonHelper.cs)	(revision 5321)
@@ -425,7 +425,7 @@
         
         if (damKernelInput.SubSoilScenario.SoilProfile2D == null)
         {
-            return null; 
+            throw new ArgumentNullException(nameof(damKernelInput.SubSoilScenario), @"SoilProfile2D cannot be null.");
         }
         
         if (damKernelInput.SubSoilScenario.SoilProfile1D != null)