Index: DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityIo/FillMacroStabilityWrapperInputFromEngine.cs
===================================================================
diff -u -r3181 -r3227
--- DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityIo/FillMacroStabilityWrapperInputFromEngine.cs	(.../FillMacroStabilityWrapperInputFromEngine.cs)	(revision 3181)
+++ DamEngine/trunk/src/Deltares.DamEngine.Calculators/KernelWrappers/MacroStabilityCommon/MacroStabilityIo/FillMacroStabilityWrapperInputFromEngine.cs	(.../FillMacroStabilityWrapperInputFromEngine.cs)	(revision 3227)
@@ -46,8 +46,8 @@
     public class FillMacroStabilityWrapperInputFromEngine
     {
 
-        private readonly Dictionary<Data.Geotechnics.Soil, MacroStability.CSharpWrapper.Input.Soil> soilsDictionary = 
-            new Dictionary<Data.Geotechnics.Soil, MacroStability.CSharpWrapper.Input.Soil>();
+        private readonly Dictionary<string, MacroStability.CSharpWrapper.Input.Soil> soilsDictionary = 
+            new Dictionary<string, MacroStability.CSharpWrapper.Input.Soil>();
 
         /// <summary>Gets or sets the UpliftVan calculation grid.</summary>
         /// <value>The uplift van calculation grid.</value>
@@ -124,7 +124,7 @@
                 {
                     var kernelSoil = ConversionHelper.ConvertToMacroStabilitySoil(damSoil);
                     kernelSoils.Add(kernelSoil);
-                    soilsDictionary.Add(damSoil, kernelSoil);
+                    soilsDictionary.Add(damSoil.Name, kernelSoil);
                 }
             }
         }
@@ -194,7 +194,7 @@
             {
                 var kernelSoilLayer2D = new SoilProfileSurface();
                 kernelSoilLayer2D.Surface = geometrySurfacesDictionary[damSoilLayer2D.GeometrySurface];
-                kernelSoilLayer2D.Soil = soilsDictionary[damSoilLayer2D.Soil];
+                kernelSoilLayer2D.Soil = soilsDictionary[damSoilLayer2D.Soil.Name];
                 kernelSoilLayer2D.IsAquifer = damSoilLayer2D.IsAquifer;
                 kernelSoilLayer2D.WaterPressureInterpolationModel =
                         ConversionHelper.ConvertToMacroStabilityWaterpressureInterpolationModel(damSoilLayer2D