Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r4817 -r4818
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4817)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Geometry2DImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4818)
@@ -72,13 +72,15 @@
         {
             string profileName = profile.SoilGeometry2DName;
             SoilProfile2D readSoilProfile = ReadSoilProfile(soilProfileDirectory, profileName);
-            string missingSoil = IsValidSoilProfile(availableSoils.Soils, readSoilProfile.Surfaces);
-            if (missingSoil != string.Empty)
+            foreach (SoilLayer2D surface in readSoilProfile.Surfaces)
             {
-                string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorUndefinedMaterials");
-                throw new SoilProfileImporterException(string.Format(messageFormat, profileName, missingSoil));
+                string missingSoil = IsSoilOfSurfacePresent(availableSoils.Soils, surface.Soil);
+                if (missingSoil != string.Empty)
+                {
+                    string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorUndefinedMaterials");
+                    throw new SoilProfileImporterException(string.Format(messageFormat, profileName, missingSoil));
+                }
             }
-
             TransferSoilLayerProperties(readSoilProfile.Surfaces);
             importedSoilProfiles.Add(readSoilProfile);
         }
@@ -144,18 +146,14 @@
         return string.Equals(Path.GetExtension(profileName), ".sti", StringComparison.OrdinalIgnoreCase);
     }
 
-    private static string IsValidSoilProfile(IEnumerable<Soil> availableSoils, IEnumerable<SoilLayer2D> surfaces)
+    private static string IsSoilOfSurfacePresent(IEnumerable<Soil> availableSoils, Soil soil)
     {
         var missingSoil = string.Empty;
         var soilNames = new HashSet<string>(availableSoils.Select(s => s.Name));
-        foreach (string soilName in surfaces.Select(s => s.Soil.Name))
+        if (!soilNames.Contains(soil.Name, StringComparer.OrdinalIgnoreCase))
         {
-            if (!soilNames.Contains(soilName, StringComparer.OrdinalIgnoreCase))
-            {
-                missingSoil = soilName;
-            }
+            missingSoil = soil.Name;
         }
-
         return missingSoil;
     }