Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs
===================================================================
diff -u -r3177 -r3178
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs	(.../LayerCreator.cs)	(revision 3177)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs	(.../LayerCreator.cs)	(revision 3178)
@@ -87,6 +87,7 @@
         private void ProcessLocations()
         {
             errors.Clear();
+            PrepareOutputFolder();
             var loggedLocations = new List<string>();
             foreach (var location in locations)
             {
@@ -111,6 +112,21 @@
             }
         }
 
+        private void PrepareOutputFolder()
+        {
+            if (!Directory.Exists(OutputFolderName))
+            {
+                Directory.CreateDirectory(OutputFolderName);
+            }
+            else
+            {
+                if (File.Exists(fullLogFilePath))
+                {
+                    File.Delete(fullLogFilePath);
+                }
+            }
+        }
+
         private SurfaceLine FindSurfaceLine(string surfaceLineId)
         {
             foreach (var surfaceLine in surfaceLines)