Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/Deltares.Dam.Tests.csproj
===================================================================
diff -u -r4217 -r4285
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/Deltares.Dam.Tests.csproj	(.../Deltares.Dam.Tests.csproj)	(revision 4217)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/Deltares.Dam.Tests.csproj	(.../Deltares.Dam.Tests.csproj)	(revision 4285)
@@ -44,6 +44,12 @@
         <Reference Include="DotSpatial.Topology">
             <HintPath>..\..\..\lib\DotSpatial\DotSpatial.Topology.dll</HintPath>
         </Reference>
+        <Reference Include="DGeoSuite.Common">
+            <HintPath>..\..\..\lib\DamEngine\DGeoSuite.Common.dll</HintPath>
+        </Reference>
+        <Reference Include="DGeoSuite.Components.Persistence">
+            <HintPath>..\..\..\lib\DamEngine\DGeoSuite.Components.Persistence.dll</HintPath>
+        </Reference>
         <Reference Include="System"/>
         <Reference Include="System.Core"/>
         <Reference Include="System.Windows"/>
@@ -492,6 +498,12 @@
         <None Update="TestData\FillXMLInputFromDamUI\Profile2D 2.sti">
             <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
         </None>
+        <None Update="TestData\FillXMLInputFromDamUI\Profile2D 1.stix">
+            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        </None>
+        <None Update="TestData\FillXMLInputFromDamUI\Profile2D 2.stix">
+            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        </None>
         <None Update="TestData\Sensors\csvfiles\characteristicpoints.csv">
             <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
         </None>
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj
===================================================================
diff -u -r4278 -r4285
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 4278)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/Deltares.Dam.Data.csproj	(.../Deltares.Dam.Data.csproj)	(revision 4285)
@@ -16,12 +16,10 @@
             <SpecificVersion>False</SpecificVersion>
             <HintPath>..\..\..\lib\Authorization\x86\Deltares.Authorization.dll</HintPath>
         </Reference>
-        <Reference Include="Deltares.DamEngine.Data, Version=18.1.0.1468, Culture=neutral, processorArchitecture=x86">
-            <SpecificVersion>False</SpecificVersion>
+        <Reference Include="Deltares.DamEngine.Data">
             <HintPath>..\..\..\lib\DamEngine\Deltares.DamEngine.Data.dll</HintPath>
         </Reference>
-        <Reference Include="Deltares.DamEngine.Io, Version=18.1.0.1468, Culture=neutral, processorArchitecture=x86">
-            <SpecificVersion>False</SpecificVersion>
+        <Reference Include="Deltares.DamEngine.Io,">
             <HintPath>..\..\..\lib\DamEngine\Deltares.DamEngine.Io.dll</HintPath>
         </Reference>
         <Reference Include="DGeoSuite.Common">
@@ -107,6 +105,7 @@
         <EmbeddedResource Include="Xsd\pi_sharedtypes.xsd"/>
     </ItemGroup>
     <ItemGroup>
+        <ProjectReference Include="..\Deltares.Dam.StixFileReader\Deltares.Dam.StixFileReader.csproj" />
         <ProjectReference Include="..\Deltares.Maps\Deltares.Maps.csproj"/>
     </ItemGroup>
     <ItemGroup>
Index: DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs
===================================================================
diff -u -r4201 -r4285
--- DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4201)
+++ DamClients/DamUI/trunk/src/DamClientsLibrary/Deltares.Dam.Data/StiImporter/SoilProfile2DImporter.cs	(.../SoilProfile2DImporter.cs)	(revision 4285)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Deltares.Dam.StixFileReader;
 using Deltares.Geotechnics.Soils;
 using Deltares.Standard.Language;
 
@@ -64,8 +65,7 @@
         }
 
         // Extract all soil profile 2D from a segment
-        IEnumerable<SoilGeometryProbability> soilProfiles = segment.SoilProfileProbabilities
-                                                                   .Where(sp => sp.SoilProfileType == SoilProfileType.SoilGeometryStiFile);
+        IEnumerable<SoilGeometryProbability> soilProfiles = segment.SoilProfileProbabilities.Where(sp => sp.SoilProfileType == SoilProfileType.SoilGeometryStiFile);
 
         var importedSoilProfiles = new List<SoilProfile2D>();
         foreach (SoilGeometryProbability profile in soilProfiles)
@@ -96,19 +96,46 @@
     {
         string soilProfileFileName = HasStiFileExtension(soilProfileName) ? soilProfileName : $"{soilProfileName}.sti";
         string filePath = Path.Combine(soilProfileDirectory, soilProfileFileName);
-        try
+        if (File.Exists(filePath))
         {
-            var reader = new StiFileReader();
-            SoilProfile2D readSoilProfile = reader.ReadSoilProfile(filePath);
-            readSoilProfile.Name = soilProfileName;
+            soilProfileFileName = HasStiFileExtension(soilProfileName) ? soilProfileName : $"{soilProfileName}.sti";
+            filePath = Path.Combine(soilProfileDirectory, soilProfileFileName);
+            try
+            {
+                var reader = new StiFileReader();
+                SoilProfile2D readSoilProfile = reader.ReadSoilProfile(filePath);
+                readSoilProfile.Name = soilProfileName;
 
-            return readSoilProfile;
+                return readSoilProfile;
+            }
+            catch (StiFileReadException e)
+            {
+                string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorReadFailed");
+                throw new SoilProfileImporterException(string.Format(messageFormat, soilProfileName, e.Message), e);
+            }
         }
-        catch (StiFileReadException e)
+
+        soilProfileFileName = StixFileReaderHelper.FetchFileNameWithStixExtension(soilProfileName);
+        filePath = Path.Combine(soilProfileDirectory, soilProfileFileName);
+        if (File.Exists(filePath))
         {
-            string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorReadFailed");
-            throw new SoilProfileImporterException(string.Format(messageFormat, soilProfileName, e.Message), e);
+            filePath = Path.Combine(soilProfileDirectory, soilProfileFileName);
+            try
+            {
+                var reader = new StixFileReader.StixFileReader();
+                SoilProfile2D readSoilProfile = reader.ReadSoilProfile(filePath);
+            
+                return readSoilProfile;
+            }
+            catch (StixFileReadException e)
+            {
+                string messageFormat = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorReadFailed");
+                throw new SoilProfileImporterException(string.Format(messageFormat, soilProfileName, e.Message), e);
+            }
         }
+
+        string message = LocalizationManager.GetTranslatedText(typeof(SoilProfile2DImporter), "ImportSoilProfileErrorReadFailed");
+        throw new SoilProfileImporterException(string.Format(message, soilProfileName, string.Empty));
     }
 
     private static bool HasStiFileExtension(string profileName)
Index: DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/StiImporter/SoilProfile2DImporterTest.cs
===================================================================
diff -u -r4209 -r4285
--- DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 4209)
+++ DamClients/DamUI/trunk/src/Dam/Deltares.Dam.Tests/StiImporter/SoilProfile2DImporterTest.cs	(.../SoilProfile2DImporterTest.cs)	(revision 4285)
@@ -206,14 +206,8 @@
                 "Muck"
             });
 
-            // Call
-            TestDelegate call = () => SoilProfile2DImporter.Import(TestDataFolder, segment, availableSoils);
-
-            // Assert
-            var exception = Assert.Throws<SoilProfileImporterException>(call);
-            Exception innerException = exception.InnerException;
-            Assert.That(innerException, Is.Not.Null);
-            Assert.That(exception.Message, Is.EqualTo($"Could not import soil profile '{invalidSoilProfileName}': {innerException.Message}."));
+            Assert.That(() => SoilProfile2DImporter.Import(TestDataFolder, segment, availableSoils), 
+                        Throws.TypeOf<SoilProfileImporterException>().With.Message.Contains($"Could not import soil profile '{invalidSoilProfileName}': "));
         }
 
         private static Segment CreateSegmentWithProfiles(IEnumerable<string> soilProfileNames)