Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporter.cs
===================================================================
diff -u -r4549 -r4569
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporter.cs	(.../CsvImporter.cs)	(revision 4549)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/CsvImporters/CsvImporter.cs	(.../CsvImporter.cs)	(revision 4569)
@@ -72,6 +72,7 @@
     {
         folderName = csvDir;
         progress?.Invoke(0.03);
+        ThrowHelper.ThrowIfDirectoryNotExist(csvDir, StringResourceNames.ImportFolderNotExist);
 
         ImportLocations(LocationsFileName);
         if (!isImportOnlyLocations)
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/CombineImportedData.cs
===================================================================
diff -u -r4549 -r4569
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/CombineImportedData.cs	(.../CombineImportedData.cs)	(revision 4549)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/IO/CombineImportedData.cs	(.../CombineImportedData.cs)	(revision 4569)
@@ -116,7 +116,7 @@
             TransferLocationsData(dike);
             TransferSoilProfilesData(dike);
             TransferSegmentData(dike);
-            TransferSigmaTauCurveData(dike); // Should be done before TransferSoilData(), because the SigmaTauCurveData is uses there
+            TransferSigmaTauCurveData(dike); // Should be done before TransferSoilData(), because the SigmaTauCurveData is used there
             TransferSoilData(dike);
             // Use InvokeWithoutPublishingEvents for performance reasons after introducing SurfaceLine2
             DataEventPublisher.InvokeWithoutPublishingEvents(() => { TransferSurfaceLines(dike); });
@@ -413,7 +413,7 @@
     private void TransferSoilData(Dike dike)
     {
         dike.FillImportedCsvSoilsFromCsvFile(SoilRecords);
-        dike.AssignImporteCsvSoilsPropertiesToSoilListSoils();
+        dike.AssignImportedCsvSoilsPropertiesToSoilListSoils();
     }
 
     private void TransferSigmaTauCurveData(Dike dike)
Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTestsNew.cs
===================================================================
diff -u -r4544 -r4569
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTestsNew.cs	(.../CsvImporterTestsNew.cs)	(revision 4544)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTestsNew.cs	(.../CsvImporterTestsNew.cs)	(revision 4569)
@@ -885,7 +885,7 @@
             File.Delete(testFilePath);
         }
 
-        CreateSigmaTauCurvesMissingColumngFile(testFilePath);
+        CreateSigmaTauCurvesMissingColumnFile(testFilePath);
         Assert.That(() => new CsvImporterSigmaTauCurves(testFilePath),
                     Throws.InstanceOf<CsvImporterSigmaTauCurvesException>().With.Message.Contains("The header misses the field:  sigma"));
     }
@@ -1004,7 +1004,7 @@
         writer.WriteLine("CurveZand;200.0;129.88");
     }
 
-    private static void CreateSigmaTauCurvesMissingColumngFile(string filePath)
+    private static void CreateSigmaTauCurvesMissingColumnFile(string filePath)
     {
         using StreamWriter writer = File.CreateText(filePath);
         writer.WriteLine("sigma_tau_curve_name;tau");
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Dike.cs
===================================================================
diff -u -r4568 -r4569
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Dike.cs	(.../Dike.cs)	(revision 4568)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Dike.cs	(.../Dike.cs)	(revision 4569)
@@ -340,7 +340,7 @@
     /// <summary>
     /// Transfer the properties of the imported soils to the existing soils in the soil list.
     /// </summary>
-    public void AssignImporteCsvSoilsPropertiesToSoilListSoils()
+    public void AssignImportedCsvSoilsPropertiesToSoilListSoils()
     {
         foreach (Soil soil in ImportedCsvSoils)
         {
Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTest.cs
===================================================================
diff -u -r4545 -r4569
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTest.cs	(.../CsvImporterTest.cs)	(revision 4545)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/CsvImporterTest.cs	(.../CsvImporterTest.cs)	(revision 4569)
@@ -81,8 +81,9 @@
     public void CvsImporter_ImportFromNonExistingDirectory_AddsMessageWithFatalErrorType()
     {
         ImportDirector.Construct("C:\\SomeNoneExistingDirectory", null);
-        Assert.AreEqual(4, LogManager.Messages.Count);
-        Assert.AreEqual(LogMessageType.FatalError, LogManager.Messages[0].MessageType);
+        Assert.AreEqual(1, LogManager.Messages.Count);
+        Assert.That(LogManager.Messages[0].MessageType, Is.EqualTo(LogMessageType.FatalError));
+        Assert.That(LogManager.Messages[0].Message, Is.EqualTo("The import folder C:\\SomeNoneExistingDirectory does not exist"));
     }
 
     /// <summary>