Index: Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs
===================================================================
diff -u -rbd29bacc20bc58cc67f27dd33fa4fa6b41db873c -rd1c60b79a5add63479f44fdbdbbd16d3593949dd
--- Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision bd29bacc20bc58cc67f27dd33fa4fa6b41db873c)
+++ Ringtoets/GrassCoverErosionInwards/src/Ringtoets.GrassCoverErosionInwards.Plugin/GrassCoverErosionInwardsGuiPlugin.cs	(.../GrassCoverErosionInwardsGuiPlugin.cs)	(revision d1c60b79a5add63479f44fdbdbbd16d3593949dd)
@@ -136,7 +136,7 @@
                                                 ParseForeshore(inwardsInput),
                                                 ParseBreakWater(inwardsInput)
                     ),
-                () => { },
+                calculation.ClearOutput,
                 output => { ParseHydraRingOutput(calculation, output); });
         }
 
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -r578037b5080f7a4820286ea02c6b4c322a8b1b09 -rd1c60b79a5add63479f44fdbdbbd16d3593949dd
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision 578037b5080f7a4820286ea02c6b4c322a8b1b09)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision d1c60b79a5add63479f44fdbdbbd16d3593949dd)
@@ -20,7 +20,6 @@
 // All rights reserved.
 
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using Core.Common.Base;
 using Core.Common.Base.Geometry;
@@ -341,7 +340,7 @@
         }
 
         [Test]
-        public void GivenCalculationWithNonExistingFilePath_WhenCalculatingFromContextMenu_ThenLogMessagesAddedOutputNotChangedObserversNotNotified()
+        public void GivenCalculationWithNonExistingFilePath_WhenCalculatingFromContextMenu_ThenOutputClearedLogMessagesAddedObserversNotNotified()
         {
             // Given
             var gui = mocks.DynamicMock<IGui>();
@@ -358,19 +357,9 @@
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
             failureMechanism.AddSection(section);
-            var hydraulicBoundaryLocation1 = new HydraulicBoundaryLocation(100001, "", 1.1, 2.2);
-            var hydraulicBoundaryLocation2 = new HydraulicBoundaryLocation(100002, "", 3.3, 4.4)
-            {
-                DesignWaterLevel = 4.2
-            };
 
             var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
             {
-                Locations =
-                {
-                    hydraulicBoundaryLocation1,
-                    hydraulicBoundaryLocation2
-                },
                 FilePath = "D:/nonExistingDirectory/nonExistingFile",
                 Version = "random"
             };
@@ -413,7 +402,7 @@
                 StringAssert.StartsWith("Er is een fout opgetreden tijdens de berekening.", msgs.Current);
             });
 
-            Assert.AreSame(calculationOutput, calculation.Output);
+            Assert.IsNull(calculation.Output);
 
             mocks.VerifyAll();
         }
Index: Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsGuiPlugin.cs
===================================================================
diff -u -rbd29bacc20bc58cc67f27dd33fa4fa6b41db873c -rd1c60b79a5add63479f44fdbdbbd16d3593949dd
--- Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsGuiPlugin.cs	(.../RingtoetsGuiPlugin.cs)	(revision bd29bacc20bc58cc67f27dd33fa4fa6b41db873c)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Plugin/RingtoetsGuiPlugin.cs	(.../RingtoetsGuiPlugin.cs)	(revision d1c60b79a5add63479f44fdbdbbd16d3593949dd)
@@ -683,7 +683,7 @@
                 HydraRingTimeIntegrationSchemeType.FBC,
                 HydraRingUncertaintiesType.All,
                 new AssessmentLevelCalculationInput((int) hydraulicBoundaryLocation.Id, assessmentSection.FailureMechanismContribution.Norm),
-                () => { },
+                () => { hydraulicBoundaryLocation.DesignWaterLevel = double.NaN; },
                 output => { ParseHydraRingOutput(hydraulicBoundaryLocation, output); });
         }