Index: DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs
===================================================================
diff -u -r5767 -r5823
--- DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs	(.../GeneralHelper.cs)	(revision 5767)
+++ DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs	(.../GeneralHelper.cs)	(revision 5823)
@@ -140,8 +140,10 @@
                 }
 
                 string fileName = calculationResult.BaseFileName;
+                // Note: only check for the iterated file if the design calculation was successful 
                 isIteratedFilePresent = isIteratedFilePresent ||
-                                        (!fileName.IsNullOrEmpty() && fileName.Contains("Ite(") && !fileName.Contains("Ite(1)"));
+                                        (!fileName.IsNullOrEmpty() && fileName.Contains("Ite(") && !fileName.Contains("Ite(1)"))
+                                        || !isDesignSuccessful;
             }
 
             // The iterated file is created only for the stability mechanism (not for piping) to be opened in D-Stability
Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculatorCombinedSlopeAndShoulderAdaption.cs
===================================================================
diff -u -r5811 -r5823
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculatorCombinedSlopeAndShoulderAdaption.cs	(.../DesignCalculatorCombinedSlopeAndShoulderAdaption.cs)	(revision 5811)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/DikesDesign/DesignCalculatorCombinedSlopeAndShoulderAdaption.cs	(.../DesignCalculatorCombinedSlopeAndShoulderAdaption.cs)	(revision 5823)
@@ -179,6 +179,10 @@
                     calculationMessages.AddRange(locationCalculationMessages);
                     isRedesignRequired = !kernelWrapper.EvaluateDesign(damKernelInput, kernelDataInput, kernelDataOutput,
                                                                        out designAdvise, out evaluationMessage);
+                    if (designAdvise == DesignAdvise.Abort)
+                    {
+                        throw new DesignCalculatorException(Resources.DesignUnsuccessful + " " + evaluationMessage);
+                    }
                 }
             }
 
Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapper.cs
===================================================================
diff -u -r5811 -r5823
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapper.cs	(.../MacroStabilityInwardsKernelWrapper.cs)	(revision 5811)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityInwards/MacroStabilityInwardsKernelWrapper.cs	(.../MacroStabilityInwardsKernelWrapper.cs)	(revision 5823)
@@ -257,9 +257,9 @@
         MacroStabilityCommonHelper.ThrowWhenMacroStabilityDamKernelInputNull(damKernelInput);
         var macroStabilityOutput = kernelDataOutput as MacroStabilityOutput;
         MacroStabilityCommonHelper.ThrowWhenMacroStabilityKernelOutputNull(macroStabilityOutput);
-        if (macroStabilityOutput!.CalculationResult != CalculationResult.Succeeded)
+        if (designScenario.CalculationResult == CalculationResult.Succeeded)
         {
-            designScenario.CalculationResult = macroStabilityOutput.CalculationResult;
+            designScenario.CalculationResult = macroStabilityOutput!.CalculationResult;
         }
         designResults = new List<DesignResult>();
 
@@ -386,6 +386,15 @@
         double fosRequired = damKernelInput.Location.ModelFactors.RequiredSafetyFactorStabilityInnerSlope;
         if (macroStabilityOutput != null)
         {
+            // Abort if calculation failed
+            if (macroStabilityOutput.StabilityOutputItems[0].CalculationResult != CalculationResult.Succeeded)
+            {
+                designAdvise = DesignAdvise.Abort;
+                evaluationMessage = "Stability calculation failed.";
+                return true;
+            }
+            
+            // Check if the factor of safety is achieved
             double fosAchieved = macroStabilityOutput.StabilityOutputItems[0].SafetyFactor;
             double exitPointXCoordinate = macroStabilityOutput.StabilityOutputItems[0].CircleSurfacePointRightXCoordinate;
             GeometryPoint limitPointForShoulderDesign = damKernelInput.Location.SurfaceLine.GetLimitPointForShoulderDesign();
Index: DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs
===================================================================
diff -u -r5811 -r5823
--- DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5811)
+++ DamEngine/trunk/src/Deltares.DamEngine.IntegrationTests/IntegrationTests/MacroStabilityInwardsTests.cs	(.../MacroStabilityInwardsTests.cs)	(revision 5823)
@@ -943,6 +943,7 @@
     [TestCase("DWP_2", "SlopeAdaptionBeforeShoulderAdaption", CalculationResult.RunFailed, 1.5, 1.348, 14, "After height adaption ditch does not fit inside surfaceline anymore.")]
     [TestCase("DWP_2", "OptimizedSlopeAndShoulderAdaption", CalculationResult.RunFailed, 1.5, 1.072, 17)]
     [TestCase("DWP_13", "OptimizedSlopeAndShoulderAdaption", CalculationResult.RunFailed, 1.5, 0.943, 23, "The characteristic points of the surfaceline are not ascending in X-direction.")]
+    [TestCase("DWP_10", "OptimizedSlopeAndShoulderAdaption", CalculationResult.RunFailed, 1.5, 0.0, 7, "Location 'DWP_10', subsoil scenario 'DWP_10.stix', design scenario '3': The calculation failed with error message 'The design was not successful. The design was not successful. Stability calculation failed.'")]
     public void GivenTutorialDesign_WhenSpecifiedLocationRunWithGeometryAdaption_ThenGivesExpectedResults(string locationId, string designMethod,
                                                                                                           CalculationResult calculationResult, double requiredSafetyFactor, double actualSafetyFactor, int iterationCount, string errorMessage = "")
     {
Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Interfaces/IKernelWrapper.cs
===================================================================
diff -u -r4540 -r5823
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Interfaces/IKernelWrapper.cs	(.../IKernelWrapper.cs)	(revision 4540)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/Interfaces/IKernelWrapper.cs	(.../IKernelWrapper.cs)	(revision 5823)
@@ -79,7 +79,8 @@
     None,
     ShoulderInwards,
     SlopeInwards,
-    Height
+    Height,
+    Abort // The design is not possible (e.g. because of a calculation failure)
 }
 
 /// <summary>