Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Service/ClosingStructuresCalculationService.cs
===================================================================
diff -u -r874233bdb7814bef40b639e0fb4d26a0b86616a0 -r533cc8038f03f3acb30f4db787a3d583f93f7008
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Service/ClosingStructuresCalculationService.cs	(.../ClosingStructuresCalculationService.cs)	(revision 874233bdb7814bef40b639e0fb4d26a0b86616a0)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.Service/ClosingStructuresCalculationService.cs	(.../ClosingStructuresCalculationService.cs)	(revision 533cc8038f03f3acb30f4db787a3d583f93f7008)
@@ -94,7 +94,7 @@
             {
                 calculator.Calculate(input);
 
-                if (!canceled)
+                if (!canceled && string.IsNullOrEmpty(calculator.LastErrorFileContent))
                 {
                     calculation.Output = ProbabilityAssessmentService.Calculate(assessmentSection.FailureMechanismContribution.Norm,
                                                                                 failureMechanism.Contribution,