Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationService.cs
===================================================================
diff -u -r874233bdb7814bef40b639e0fb4d26a0b86616a0 -r533cc8038f03f3acb30f4db787a3d583f93f7008
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationService.cs	(.../HeightStructuresCalculationService.cs)	(revision 874233bdb7814bef40b639e0fb4d26a0b86616a0)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Service/HeightStructuresCalculationService.cs	(.../HeightStructuresCalculationService.cs)	(revision 533cc8038f03f3acb30f4db787a3d583f93f7008)
@@ -118,7 +118,7 @@
             {
                 calculator.Calculate(input);
 
-                if (!canceled)
+                if (!canceled && string.IsNullOrEmpty(calculator.LastErrorFileContent))
                 {
                     calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm,
                                                                                 failureMechanism.Contribution,