Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs
===================================================================
diff -u -r3217 -r3218
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs	(.../LayerCreator.cs)	(revision 3217)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.LayerCreator/LayerCreator.cs	(.../LayerCreator.cs)	(revision 3218)
@@ -184,7 +184,7 @@
                 SurfaceLine = surfaceLine,
                 DikeMaterialName = location.DikeMaterial,
                 InputFilename = Path.Combine(GeometriesFolderName, location.SoilGeometryName),
-                OutputFilename = Path.Combine(OutputFolderName, "Interim" + location.LocationId + "_" + surfaceLine.SurfaceLineId)// SoilGeometryName)
+                OutputFilename = Path.Combine(OutputFolderName, "Interim" + location.LocationId + "_" + surfaceLine.SurfaceLineId + ".sti")// SoilGeometryName)
             };
             StiFileCreator.StiFileCreator.ProcessFile(stiFileCreatorInput);
         }
@@ -197,8 +197,8 @@
                 XOffset = 0,
                 SurfaceLine = surfaceLine,
                 DikeMaterialName = location.LayerMaterial,
-                InputFilename = Path.Combine(OutputFolderName, "Interim" + location.LocationId + "_" + loweredSurfaceLineId), // SoilGeometryName),
-                OutputFilename = Path.Combine(OutputFolderName, location.LocationId + "_" + surfaceLine.SurfaceLineId) //SoilGeometryName)
+                InputFilename = Path.Combine(OutputFolderName, "Interim" + location.LocationId + "_" + loweredSurfaceLineId + ".sti"), // SoilGeometryName),
+                OutputFilename = Path.Combine(OutputFolderName, location.LocationId + "_" + surfaceLine.SurfaceLineId + ".sti") //SoilGeometryName)
             };
             StiFileCreator.StiFileCreator.ProcessFile(stiFileCreatorInput);
         }