Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml
===================================================================
diff -u -r3019 -r3044
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 3019)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Translations.xml	(.../Translations.xml)	(revision 3044)
@@ -578,7 +578,8 @@
   <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." />
+  <Translation ID="ImportSoilProfileErrorUndefinedMaterials" en-US="'{0}' contains undefined soils." nl-NL="'{0}' bevat ongedefinieerde materialen." />
+  <Translation ID="ImportSoilProfileErrorReadFailed" en-US="Could not import soil profile '{0}': {1}." nl-NL="Kan grondprofiel '{0}' niet importeren: {1}." />
   <Translation ID="ReadUnsupportedStiFile" en-US="'{0}' is an unsupported file." nl-NL="Bestand '{0}' wordt niet ondersteund." />
   <Translation ID="ReadStiFileFailed" en-US="Reading file '{0}' failed: {1}." nl-NL="Het lezen van bestand '{0}' is mislukt: {1}." />
   <Translation ID="ValidateStiFileUnsupportedVersion" en-US="{0} data in '{1}' is of a version of D-Geo Stability that is not supported and cannot be read." nl-NL="{0} data in '{1}'  is van een versie van D-Geo Stability die niet ondersteund wordt en kan niet gelezen worden." />
Index: DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs
===================================================================
diff -u -r3036 -r3044
--- DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 3036)
+++ DamClients/DamUI/trunk/src/Dam/Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 3044)
@@ -43,11 +43,8 @@
         [TestCase("")]
         public void Import_InvalidSoilProfileDirectory_ThrowsArgumentException(string invalidSoilProfileDirectory)
         {
-            // Setup
-            var importer = new SoilProfile2DImporter();
-
             // Call
-            TestDelegate call = () => importer.Import(invalidSoilProfileDirectory, new Segment(), new SoilList());
+            TestDelegate call = () => SoilProfile2DImporter.Import(invalidSoilProfileDirectory, new Segment(), new SoilList());
 
             // Assert
             Assert.That(call, Throws.ArgumentException
@@ -57,11 +54,8 @@
         [Test]
         public void Import_SegmentNull_ThrowsArgumentNullException()
         {
-            // Setup
-            var importer = new SoilProfile2DImporter();
-
             // Call
-            TestDelegate call = () => importer.Import(string.Empty, null, new SoilList());
+            TestDelegate call = () => SoilProfile2DImporter.Import(string.Empty, null, new SoilList());
 
             // Assert
             Assert.That(call, Throws.TypeOf<ArgumentNullException>()
@@ -72,11 +66,8 @@
         [Test]
         public void Import_AvailableSoilsNull_ThrowsArgumentNullException()
         {
-            // Setup
-            var importer = new SoilProfile2DImporter();
-
             // Call
-            TestDelegate call = () => importer.Import(string.Empty, new Segment(), null);
+            TestDelegate call = () => SoilProfile2DImporter.Import(string.Empty, new Segment(), null);
 
             // Assert
             Assert.That(call, Throws.TypeOf<ArgumentNullException>()
@@ -102,11 +93,9 @@
                 "Peat",
                 "Muck"
             });
-
-            var importer = new SoilProfile2DImporter();
             
             // Call
-            IEnumerable<SoilProfile2D> soilProfiles = importer.Import(TestDataFolder, segment, availableSoils);
+            IEnumerable<SoilProfile2D> soilProfiles = SoilProfile2DImporter.Import(TestDataFolder, segment, availableSoils);
 
             // Assert
             Assert.That(soilProfiles, Has.Count.EqualTo(2));
@@ -131,7 +120,7 @@
         }
 
         [Test]
-        public void Import_WithIncompleteSoilList_ReturnsOnlyCompleteSoilProfilesAndLogsMessage()
+        public void Import_WithIncompleteSoilList_ThrowsSoilProfileImporterException()
         {
             // Setup
             LogManager.Messages.Clear(); // Clear all messages as it is a singleton
@@ -149,75 +138,41 @@
                 "Muck"
             });
 
-            var importer = new SoilProfile2DImporter();
-
             // Call
-            IEnumerable<SoilProfile2D> soilProfiles = importer.Import(TestDataFolder, segment, availableSoils);
+            TestDelegate call = () => SoilProfile2DImporter.Import(TestDataFolder, segment, availableSoils);
 
             // Assert
-            Assert.That(soilProfiles, Has.Count.EqualTo(1));
-
-            SoilProfile2D soilProfileOne = soilProfiles.ElementAt(0);
-            Assert.That(soilProfileOne.Name, Is.EqualTo(profileName));
-            CollectionAssert.AreEqual(new[]
-            {
-                "Soft Clay",
-                "Muck"
-            }, soilProfileOne.Surfaces.Select(s => s.Name));
-
-            string expectedMessage = $"'{invalidSoilProfile}' contains undefined soils.";
-            CollectionAssert.AreEqual(new[]
-            {
-                expectedMessage
-            }, LogManager.Messages.Select(m => m.Message));
-            CollectionAssert.AreEqual(new[]
-            {
-                LogMessageType.Error
-            }, LogManager.Messages.Select(m => m.MessageType));
-            CollectionAssert.AreEqual(new[]
-            {
-                importer
-            }, LogManager.Messages.Select(m => m.Subject));
+            Assert.That(call, Throws.Exception.TypeOf<SoilProfileImporterException>()
+                .With.Message.EqualTo($"'{invalidSoilProfile}' contains undefined soils."));
+            
         }
 
         [Test]
-        public void Import_WithSoilProfileCausingReadException_ReturnsOnlyCompleteSoilProfilesAndLogsMessage()
+        public void Import_WithSoilProfileCausingReadException_ThrowsSoilProfileImporterException()
         {
             // Setup
             LogManager.Messages.Clear(); // Clear all messages as it is a singleton
 
-            const string profileName = "SimpleProfile";
+            const string invalidSoilProfileName = "NonExistentSoilProfile";
             Segment segment = CreateSegmentWithProfiles(new[]
             {
-                $"{profileName}.sti",
-                "NonExistentSoilProfile"
+                "SimpleProfile.sti",
+                invalidSoilProfileName
             });
             SoilList availableSoils = CreateSoilList(new[]
             {
                 "Soft Clay",
                 "Muck"
             });
 
-            var importer = new SoilProfile2DImporter();
-
             // Call
-            IEnumerable<SoilProfile2D> soilProfiles = importer.Import(TestDataFolder, segment, availableSoils);
+            TestDelegate call = () => SoilProfile2DImporter.Import(TestDataFolder, segment, availableSoils);
 
             // Assert
-            Assert.That(soilProfiles, Has.Count.EqualTo(1));
-
-            SoilProfile2D soilProfileOne = soilProfiles.ElementAt(0);
-            Assert.That(soilProfileOne.Name, Is.EqualTo(profileName));
-            CollectionAssert.AreEqual(new[]
-            {
-                "Soft Clay",
-                "Muck"
-            }, soilProfileOne.Surfaces.Select(s => s.Name));
-
-            LogMessage logMessage = LogManager.Messages.Single();
-            Assert.That(logMessage.Message, Is.Not.Empty);
-            Assert.That(logMessage.MessageType, Is.EqualTo(LogMessageType.Error));
-            Assert.That(logMessage.Subject, Is.SameAs(importer));
+            var exception = Assert.Throws<SoilProfileImporterException>(call);
+            Exception innerException = exception.InnerException;
+            Assert.That(innerException, Is.Not.Null);
+            Assert.That(exception.Message, Is.EqualTo($"Could not import soil profile '{invalidSoilProfileName}': {innerException.Message}."));
         }
 
         private static Segment CreateSegmentWithProfiles(IEnumerable<string> soilProfileNames)
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfileImporterException.cs
===================================================================
diff -u
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfileImporterException.cs	(revision 0)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfileImporterException.cs	(revision 3044)
@@ -0,0 +1,55 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace Deltares.Dam.Data.StiImporter
+{
+    /// <summary>
+    /// Exception thrown when the soil profiles could not be successfully imported.
+    /// </summary>
+    [Serializable]
+    public class SoilProfileImporterException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SoilProfileImporterException"/> class.
+        /// </summary>
+        public SoilProfileImporterException()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SoilProfileImporterException"/> class 
+        /// with a specified error message.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public SoilProfileImporterException(string message)
+            : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SoilProfileImporterException"/> class with a specified error message 
+        /// and a reference to the inner exception that is the cause of this exception.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        /// <param name="innerException">The exception that is the cause of the current exception,
+        /// or <c>null</c> if no inner exception is specified.</param>
+        public SoilProfileImporterException(string message, Exception innerException) : base(message, innerException)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of <see cref="SoilProfileImporterException"/> with
+        /// serialized data.</summary>
+        /// <param name="info">The <see cref="SerializationInfo"/> that holds the serialized
+        /// object data about the exception being thrown.</param>
+        /// <param name="context">The <see cref="StreamingContext"/> that contains contextual
+        /// information about the source or destination.</param>
+        /// <exception cref="ArgumentNullException">The <paramref name="info"/> parameter is
+        /// <c>null</c>.</exception>
+        /// <exception cref="SerializationException">The class name is <c>null</c> or
+        /// <see cref="Exception.HResult" /> is zero (0).</exception>
+        protected SoilProfileImporterException(SerializationInfo info, StreamingContext context) : base(info, context)
+        {
+        }
+    }
+}
\ No newline at end of file
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj
===================================================================
diff -u -r3034 -r3044
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 3034)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 3044)
@@ -202,6 +202,7 @@
     <Compile Include="Sensors\SensorImportFromExcelSheet.cs" />
     <Compile Include="Sensors\Specifications\PolderLevelSensorSpecification.cs" />
     <Compile Include="StiImporter\SoilProfile2DImporter.cs" />
+    <Compile Include="StiImporter\SoilProfileImporterException.cs" />
     <Compile Include="StiImporter\StiFileReadException.cs" />
     <Compile Include="StiImporter\StiFileReader.cs" />
     <Compile Include="StiImporter\StiFileValidator.cs" />
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r3036 -r3044
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 3036)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 3044)
@@ -25,14 +25,13 @@
 using System.Linq;
 using Deltares.Geotechnics.Soils;
 using Deltares.Standard.Language;
-using Deltares.Standard.Logging;
 
 namespace Deltares.Dam.Data.StiImporter
 {
     /// <summary>
     /// Importer to import <see cref="SoilProfile2D" />.
     /// </summary>
-    public class SoilProfile2DImporter
+    public static class SoilProfile2DImporter
     {
         /// <summary>
         /// Imports the <see cref="SoilProfile2D" /> that are contained within <paramref name="segment" />.
@@ -41,15 +40,15 @@
         /// <param name="segment">The <see cref="Segment" /> to import the soil profiles for.</param>
         /// <param name="availableSoils">The <see cref="SoilList" /> that contains all the valid soil materials.</param>
         /// <returns>A collection of <see cref="SoilProfile2D" />.</returns>
-        /// <exception cref="ArgumentNullException">
-        /// Thrown when <paramref name="segment" /> or <paramref name="availableSoils" /> is <c>null</c>.
+        /// <exception cref="ArgumentNullException"> Thrown when <paramref name="segment" /> or <paramref name="availableSoils" /> is <c>null</c>.
         /// </exception>
         /// <exception cref="ArgumentException"> Thrown when <paramref name="soilProfileDirectory" />
         /// is <c>null</c>, empty or consist of only whitespaces.
         /// </exception>
-        /// <exception cref="IOException"> Thrown when no soil profiles could be read from <paramref name="soilProfileDirectory" />.
+        /// <exception cref="IOException">Thrown when no soil profiles could be read from <paramref name="soilProfileDirectory" />.
         /// </exception>
-        public IEnumerable<SoilProfile2D> Import(string soilProfileDirectory, Segment segment, SoilList availableSoils)
+        /// <exception cref="SoilProfileImporterException">Thrown when the soil profiles could not be successfully imported.</exception>
+        public static IEnumerable<SoilProfile2D> Import(string soilProfileDirectory, Segment segment, SoilList availableSoils)
         {
             if (segment == null)
             {
@@ -75,25 +74,19 @@
             {
                 string soilProfileFile = profile.SoilGeometry2DName;
                 SoilProfile2D readSoilProfile = ReadSoilProfile(soilProfileDirectory, soilProfileFile);
-                if (readSoilProfile != null)
+                if (!IsValidSoilProfile(availableSoils, readSoilProfile))
                 {
-                    if (IsValidSoilProfile(availableSoils, readSoilProfile))
-                    {
-                        importedSoilProfiles.Add(readSoilProfile);
-                    }
-                    else
-                    {
-                        string messageFormat = LocalizationManager.GetTranslatedText(this, "ImportSoilProfileError");
-                        string message = string.Format(messageFormat, soilProfileFile);
-                        LogManager.Messages.Add(new LogMessage(LogMessageType.Error, this, message));
-                    }
+                    string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorUndefinedMaterials");
+                    throw new SoilProfileImporterException(string.Format(messageFormat, soilProfileFile));
                 }
+
+                importedSoilProfiles.Add(readSoilProfile);
             }
 
             return importedSoilProfiles;
         }
 
-        private SoilProfile2D ReadSoilProfile(string soilProfileDirectory, string soilProfileFile)
+        private static SoilProfile2D ReadSoilProfile(string soilProfileDirectory, string soilProfileFile)
         {
             string filePath = Path.Combine(soilProfileDirectory, soilProfileFile);
 
@@ -105,10 +98,10 @@
             }
             catch (StiFileReadException e)
             {
-                LogManager.Messages.Add(new LogMessage(LogMessageType.Error, this, e.Message));
+                string soilProfileName = Path.GetFileNameWithoutExtension(soilProfileFile);
+                string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorReadFailed");
+                throw new SoilProfileImporterException(string.Format(messageFormat, soilProfileName, e.Message), e);
             }
-
-            return null;
         }
 
         private static bool IsValidSoilProfile(SoilList availableSoils, SoilProfile2D profile)