Index: DamFailureMechanisms/damMacroStability/tags/19.3.1/release/DDAMStiWriter.exe
===================================================================
diff -u
Binary files differ
Index: DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/KernelWrappers/DamMacroStabilityInwards/DamMacroStabilityInwardsKernelWrapper.cs
===================================================================
diff -u -r4296 -r4297
--- DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/KernelWrappers/DamMacroStabilityInwards/DamMacroStabilityInwardsKernelWrapper.cs	(.../DamMacroStabilityInwardsKernelWrapper.cs)	(revision 4296)
+++ DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/KernelWrappers/DamMacroStabilityInwards/DamMacroStabilityInwardsKernelWrapper.cs	(.../DamMacroStabilityInwardsKernelWrapper.cs)	(revision 4297)
@@ -24,6 +24,7 @@
 using System.Data;
 using System.Diagnostics;
 using System.IO;
+using System.Text;
 using System.Threading;
 using System.Xml.Linq;
 using Deltares.DamEngine.Calculators.DikesDesign;
@@ -229,7 +230,7 @@
             try
             {
                 // start (first) calculation
-                var stabilityOutputItem = ExcecuteCalculation(kernelDataInput, messages);
+                var stabilityOutputItem = ExecuteCalculation(kernelDataInput, messages);
                 if (stabilityOutputItem != null)
                 {
                     damMacroStabilityOutput.StabilityOutputItems.Add(stabilityOutputItem);
@@ -247,7 +248,7 @@
                         input.DGeoStabilityInputFileName = input.DGeoStabilityInputFileNameSecondModel;
                         try
                         {
-                            var stabilityOutputItemSecondModel = ExcecuteCalculation(kernelDataInput, messages);
+                            var stabilityOutputItemSecondModel = ExecuteCalculation(kernelDataInput, messages);
                             if (stabilityOutputItemSecondModel != null)
                             {
                                 damMacroStabilityOutput.StabilityOutputItems.Add(stabilityOutputItemSecondModel);
@@ -278,8 +279,9 @@
             }
         }
 
-        private static DamMacroStabilityOutputItem ExcecuteCalculation(IKernelDataInput kernelDataInput, List<LogMessage> messages)
+        private static DamMacroStabilityOutputItem ExecuteCalculation(IKernelDataInput kernelDataInput, List<LogMessage> messages)
         {
+            System.Threading.Thread.Sleep(40);
             var input = (DamMacroStabilityInput)kernelDataInput;
             var calculator = StabilityCalculator(kernelDataInput);
             try
@@ -351,29 +353,87 @@
 
         internal bool CreateStiFile(string stabilityXmlFile, string exePath)
         {
-            const string stiWriter = "DDAMStiWriter.exe";
-            var exeFolder = Path.GetDirectoryName(exePath);
-            string str = string.Format("/f \"{0}\"", (object) stabilityXmlFile + ".xml");
-            string stabilityExePath = exeFolder + "\\" + stiWriter;
-            Process process = new Process()
+            if (File.Exists(stabilityXmlFile + ".xml"))
             {
-                StartInfo = {
-                    FileName = stabilityExePath,
-                    Arguments = str,
-                    UseShellExecute = false
+                const string stiWriter = "DDAMStiWriter.exe";
+                var exeFolder = Path.GetDirectoryName(exePath);
+                string str = string.Format("/f \"{0}\"", (object)stabilityXmlFile + ".xml");
+                string stabilityExePath = exeFolder + "\\" + stiWriter;
+                int exitCode;
+                var errors = new StringBuilder();
+                var output = new StringBuilder();
+                var hadErrors = false;
+                string stdOut = "";
+                string stdErr = "";
+                Process process = new Process()
+                {
+                    StartInfo =
+                    {
+                        WindowStyle = ProcessWindowStyle.Hidden,
+                        CreateNoWindow = true,
+                        RedirectStandardError = true,
+                        RedirectStandardOutput = true,
+                        FileName = stabilityExePath,
+                        Arguments = str,
+                        UseShellExecute = false
+                    }
+                };
+                try
+                {
+                    process.EnableRaisingEvents = true;
+                    process.OutputDataReceived += (s, d) => { output.Append(d.Data); };
+                    process.ErrorDataReceived += (s, d) => 
+                    { 
+                        if (!hadErrors)
+                        {
+                            hadErrors = !String.IsNullOrEmpty(d.Data);
+                        }
+                        errors.Append(d.Data); 
+                    };
+                    process.Start();
+                    try
+                    {
+                        process.BeginErrorReadLine();
+                        process.BeginOutputReadLine();
+                        process.WaitForExit();
+                        exitCode = process.ExitCode;
+                        stdOut = output.ToString();
+                        stdErr = errors.ToString();
+
+                    }
+                    catch (ThreadInterruptedException ex)
+                    {
+                        return false;
+                    }
                 }
-            };
-            process.Start();
-            try
-            {
-                process.WaitForExit();
+                catch (Exception e)
+                {
+                    var message = string.Format(Resources.DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError,
+                        e.Message);
+                    throw new MacroStabilityException((message));
+                }
+
+                if (!File.Exists(stabilityXmlFile))
+                {
+                    string errorMessage = "no error";
+                    if (exitCode !=0 || hadErrors)
+                    {
+                        errorMessage = stdErr;
+                    }
+                    var message = string.Format(Resources.DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError,
+                        stabilityXmlFile + " exit code = " + exitCode + " error = " + errorMessage + " output = " +
+                        stdOut);
+                    throw new MacroStabilityException(message);
+                }
+
+                return true;
             }
-            catch (ThreadInterruptedException ex)
+            else
             {
-                return false;
+                var message = string.Format(Resources.DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError,
+                    "The xml file is not there (yet) for : " + stabilityXmlFile);
+                throw new MacroStabilityException(message);
             }
-
-            return true;
         }
 
         internal static StabilityCalculator StabilityCalculator(IKernelDataInput kernelDataInput)
Index: DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.resx
===================================================================
diff -u -r3737 -r4297
--- DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.resx	(.../Resources.resx)	(revision 3737)
+++ DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.resx	(.../Resources.resx)	(revision 4297)
@@ -306,4 +306,7 @@
   <data name="DesignCalculatorNoSegmentsWithFailureMechanismTypePresent" xml:space="preserve">
     <value>No segments with failure mechanism {0} present</value>
   </data>
+  <data name="DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError" xml:space="preserve">
+    <value>The conversion of the sti.xml to sti file failed: {0}.</value>
+  </data>
 </root>
\ No newline at end of file
Index: DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.Designer.cs
===================================================================
diff -u -r3737 -r4297
--- DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 3737)
+++ DamEngine/branches/DamEngine 19.3/src/Deltares.DamEngine.Calculators/Properties/Resources.Designer.cs	(.../Resources.Designer.cs)	(revision 4297)
@@ -1,7 +1,6 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.42000
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -79,6 +78,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to The conversion of the sti.xml to sti file failed: {0}..
+        /// </summary>
+        internal static string DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError {
+            get {
+                return ResourceManager.GetString("DamMacroStabilityKernelWrapper_ConvertStiXmlToStiError", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to Design not support for this model ({0})..
         /// </summary>
         internal static string DamMacroStabilityKernelWrapper_DesignNotSupportedForModel {
@@ -136,6 +144,15 @@
         }
         
         /// <summary>
+        ///   Looks up a localized string similar to Required safety factor must be specified.
+        /// </summary>
+        internal static string DamMacroStabilityOutwardsKernelWrapper_Prepare_NoRequiredSafetyFactor {
+            get {
+                return ResourceManager.GetString("DamMacroStabilityOutwardsKernelWrapper_Prepare_NoRequiredSafetyFactor", resourceCulture);
+            }
+        }
+        
+        /// <summary>
         ///   Looks up a localized string similar to No Dam input object defined for Bligh.
         /// </summary>
         internal static string DamPipingBlighKernelWrapper_NoDamInputObjectDefinedForBligh {