Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs
===================================================================
diff -u -r61a49a907749e8cf46ce15b227108fd42ffece87 -raaf4de17c3ced8f48ce22552624671d03598c22b
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision 61a49a907749e8cf46ce15b227108fd42ffece87)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingPlugin.cs	(.../PipingPlugin.cs)	(revision aaf4de17c3ced8f48ce22552624671d03598c22b)
@@ -544,12 +544,14 @@
 
         private void CalculateAll(PipingFailureMechanismContext failureMechanismContext)
         {
-            CalculateAll(failureMechanismContext.WrappedData.CalculationsGroup, failureMechanismContext.Parent);
+            ActivityProgressDialogRunner.Run(
+                Gui.MainWindow, PipingCalculationActivityFactory.CreateCalculationActivities(failureMechanismContext.WrappedData, failureMechanismContext.Parent));
         }
 
         private void CalculateAll(CalculationGroup group, PipingCalculationGroupContext context)
         {
-            CalculateAll(context.WrappedData, context.AssessmentSection);
+            ActivityProgressDialogRunner.Run(
+                Gui.MainWindow, PipingCalculationActivityFactory.CreateCalculationActivities(group, context.AssessmentSection));
         }
 
         private static void ValidateAll(IEnumerable<PipingCalculation> pipingCalculations, IAssessmentSection assessmentSection)
@@ -560,13 +562,6 @@
             }
         }
 
-        private void CalculateAll(CalculationGroup calculationGroup,
-                                  IAssessmentSection assessmentSection)
-        {
-            ActivityProgressDialogRunner.Run(
-                Gui.MainWindow, PipingCalculationActivityFactory.CreateCalculationActivities(calculationGroup, assessmentSection));
-        }
-
         #region PipingSurfaceLinesContext TreeNodeInfo
 
         private ContextMenuStrip PipingSurfaceLinesContextContextMenuStrip(PipingSurfaceLinesContext nodeData, object parentData, TreeViewControl treeViewControl)
@@ -790,7 +785,7 @@
 
         private void PerformCalculation(PipingCalculation calculation, PipingCalculationScenarioContext context)
         {
-            ActivityProgressDialogRunner.Run(Gui.MainWindow, 
+            ActivityProgressDialogRunner.Run(Gui.MainWindow,
                                              PipingCalculationActivityFactory.CreateCalculationActivity(calculation, context.AssessmentSection));
         }