Index: dam clients/DamUI/trunk/src/Dam/Forms/DamSpatialEditorDecorator.cs
===================================================================
diff -u -r341 -r655
--- dam clients/DamUI/trunk/src/Dam/Forms/DamSpatialEditorDecorator.cs	(.../DamSpatialEditorDecorator.cs)	(revision 341)
+++ dam clients/DamUI/trunk/src/Dam/Forms/DamSpatialEditorDecorator.cs	(.../DamSpatialEditorDecorator.cs)	(revision 655)
@@ -435,7 +435,10 @@
                     switch (csvExportData.DamFailureMechanismeCalculation.FailureMechanismSystemType)
                     {
                         case FailureMechanismSystemType.Piping:
-                            ShowRedesignedSurfaceLine(csvExportData.RedesignedSurfaceLine2Piping.Geometry);
+                            if (csvExportData.RedesignedSurfaceLine2Piping != null)
+                            {
+                                ShowRedesignedSurfaceLine(csvExportData.RedesignedSurfaceLine2Piping.Geometry);
+                            }
                             break;
                         case FailureMechanismSystemType.StabilityInside:
                         case FailureMechanismSystemType.StabilityOutside: