Index: DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs
===================================================================
diff -u -r3405 -r3406
--- DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs	(.../FillXmlOutputFromDam.cs)	(revision 3405)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface/FillXmlOutputFromDam.cs	(.../FillXmlOutputFromDam.cs)	(revision 3406)
@@ -277,30 +277,40 @@
                         desResult.StabilityDesignResults.SlipCircleDefinition = new SlidingCircleMinimumSafetyCurveType();
                         var sl = (SlidingCircleMinimumSafetyCurveType) desResult.StabilityDesignResults.SlipCircleDefinition;
 
-                        sl.Center = new Point2DType()
+                        if (designResult.StabilityDesignResults.ActiveCenterPoint != null)
                         {
-                            X = designResult.StabilityDesignResults.ActiveCenterPoint.X,
-                            Z = designResult.StabilityDesignResults.ActiveCenterPoint.Z
-                        };
-                        sl.Radius = designResult.StabilityDesignResults.ActiveCenterPointRadius;
+                            sl.Center = new Point2DType()
+                            {
+                                X = designResult.StabilityDesignResults.ActiveCenterPoint.X,
+                                Z = designResult.StabilityDesignResults.ActiveCenterPoint.Z
+                            };
+                            sl.Radius = designResult.StabilityDesignResults.ActiveCenterPointRadius;
+                        }
+
                         break;
 
                     case MStabModelType.UpliftVan:
                         desResult.StabilityDesignResults.SlipCircleDefinition = new DualSlidingCircleMinimumSafetyCurveType();
                         var dsl = (DualSlidingCircleMinimumSafetyCurveType) desResult.StabilityDesignResults.SlipCircleDefinition;
-                        dsl.ActiveCircleCenter = new Point2DType()
+                        if (designResult.StabilityDesignResults.ActiveCenterPoint != null)
                         {
-                            X = designResult.StabilityDesignResults.ActiveCenterPoint.X,
-                            Z = designResult.StabilityDesignResults.ActiveCenterPoint.Z
-                        };
+                            dsl.ActiveCircleCenter = new Point2DType()
+                            {
+                                X = designResult.StabilityDesignResults.ActiveCenterPoint.X,
+                                Z = designResult.StabilityDesignResults.ActiveCenterPoint.Z
+                            };
                         dsl.ActiveCircleRadius = designResult.StabilityDesignResults.ActiveCenterPointRadius;
+                        }
 
-                        dsl.PassiveCircleCenter = new Point2DType()
+                        if (designResult.StabilityDesignResults.PassiveCenterPoint != null)
                         {
-                            X = designResult.StabilityDesignResults.PassiveCenterPoint.X,
-                            Z = designResult.StabilityDesignResults.PassiveCenterPoint.Z
-                        };
-                        dsl.PassiveCircleRadius = designResult.StabilityDesignResults.PassiveCenterPointRadius;
+                            dsl.PassiveCircleCenter = new Point2DType()
+                            {
+                                X = designResult.StabilityDesignResults.PassiveCenterPoint.X,
+                                Z = designResult.StabilityDesignResults.PassiveCenterPoint.Z
+                            };
+                            dsl.PassiveCircleRadius = designResult.StabilityDesignResults.PassiveCenterPointRadius;
+                        }
                         break;
                 }
             }