Index: DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilSurfaceProfile.cs
===================================================================
diff -u -r3269 -r3270
--- DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilSurfaceProfile.cs	(.../SoilSurfaceProfile.cs)	(revision 3269)
+++ DamEngine/trunk/src/Deltares.DamEngine.Data/Geotechnics/SoilSurfaceProfile.cs	(.../SoilSurfaceProfile.cs)	(revision 3270)
@@ -181,7 +181,7 @@
             geometryData.Right = maxX;
             geometryData.Bottom = Math.Min(profile.BottomLevel, surfaceLine.Geometry.GetMinZ() - 1);
 
-            var localSurfaceLineCurves = GenerateCurves(localSurfaceLinePoints.ToList());
+            var localSurfaceLineCurves = GenerateCurves(localSurfaceLinePoints.ToArray());
 
             var pointsToBeAdded = layers.SelectMany(l => l.Points)
                 .Concat(localSurfaceLinePoints);