Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/SubCalculator/UpliftVanCalculator.cs
===================================================================
diff -u -rb8a87d12087e3af75515ecbf7ddf5004108e826d -r3678f8db830d30b1d0e6518ea3b71ce5465e93fe
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/SubCalculator/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision b8a87d12087e3af75515ecbf7ddf5004108e826d)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/SubCalculator/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision 3678f8db830d30b1d0e6518ea3b71ce5465e93fe)
@@ -45,7 +45,12 @@
             {
                 ModelOption = ModelOptions.UpliftVan,
                 SearchAlgorithm = SearchAlgorithm.Grid,
-                GridOrientation = GridOrientation.Inwards
+                GridOrientation = GridOrientation.Inwards,
+                SlipPlaneConstraints = new SlipPlaneConstraints
+                {
+                    AutomaticForbiddenZones = true,
+                    CreateZones = true
+                }
             };
         }
 
@@ -105,7 +110,7 @@
                 wrappedCalculator.InitializeForDeterministic(WTISerializer.Serialize(calculatorInput));
 
                 string messages = wrappedCalculator.Validate();
-                wrappedCalculator.Run();
+                string result = wrappedCalculator.Run();
             }
             catch (Exception e)
             {