Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r3015 -r3016
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 3015)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 3016)
@@ -3,6 +3,7 @@
 using System.IO;
 using System.Linq;
 using Deltares.Geotechnics.Soils;
+using Deltares.Standard.Language;
 using Deltares.Standard.Logging;
 
 namespace Deltares.Dam.Data.StiImporter
@@ -61,7 +62,9 @@
                     }
                     else
                     {
-                        LogManager.Messages.Add(new LogMessage(LogMessageType.Error, this, $"'{soilProfileFile}' contains undefined soil materials."));
+                        string messageFormat = LocalizationManager.GetTranslatedText(this, "ImportSoilProfileError");
+                        string message = string.Format(messageFormat, soilProfileFile);
+                        LogManager.Messages.Add(new LogMessage(LogMessageType.Error, this, message));
                     }
                 }
             }
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml
===================================================================
diff -u -r2950 -r3016
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 2950)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 3016)
@@ -578,4 +578,5 @@
   <Translation ID="ProjectType" en-US="Project Type" nl-NL="Semi tijdsafhankelijk" />
   <Translation ID="OpenProjectWarningFileVersion" en-US="The project was created with an older version of DAM; the following parameters are not present anymore in Location and will be transferred to the location scenarios: Polder level, Head PL2, Head PL3 and Head PL4." nl-NL="Dit project is gemaakt met een oudere versie van DAM; de volgende parameters zijn niet meer aanwezig in Locatie en worden verplaatst naar de locatie scenarios: Polderpeil, Stijghoogte PL2, Stijghoogte PL3 and Stijghoogte PL4." />
   <Translation ID="ZoneTypeWarning" en-US="The parameter Zone type will be set to 'No Zones' if 'Zone Areas' was selected." nl-NL="De waarde voor Zone type wordt gezet naar 'Geen zones' als 'Zone gebieden' voorheen was geselecteerd." />
+  <Translation ID="ImportSoilProfileError" en-US="'{0}' contains undefined soils." nl-NL="'{0}' bevat ongedefinieerde materialen." />
 </Translations>
\ No newline at end of file
Index: DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs
===================================================================
diff -u -r3015 -r3016
--- DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 3015)
+++ DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 3016)
@@ -136,7 +136,7 @@
                 "Muck"
             }, soilProfileOne.Surfaces.Select(s => s.Name));
 
-            string expectedMessage = $"'{invalidSoilProfile}' contains undefined soil materials.";
+            string expectedMessage = $"'{invalidSoilProfile}' contains undefined soils.";
             CollectionAssert.AreEqual(new[]
             {
                 expectedMessage