Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs
===================================================================
diff -u -r047a56dd0274ea50de6f06ebad47fbe75ba86ba5 -rf9b49f0ae3953ae90d7ce9d595e61ffa47d4b126
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs	(.../StabilityStoneCoverPlugin.cs)	(revision 047a56dd0274ea50de6f06ebad47fbe75ba86ba5)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Plugin/StabilityStoneCoverPlugin.cs	(.../StabilityStoneCoverPlugin.cs)	(revision f9b49f0ae3953ae90d7ce9d595e61ffa47d4b126)
@@ -141,7 +141,7 @@
         {
             yield return new ExportInfo<StabilityStoneCoverWaveConditionsCalculationGroupContext>
             {
-                CreateFileExporter = (context, filePath) => new StabilityStoneCoverWaveConditionsExporter(context.WrappedData.Children.OfType<ICalculation>().Cast<StabilityStoneCoverWaveConditionsCalculation>(), filePath),
+                CreateFileExporter = (context, filePath) => new StabilityStoneCoverWaveConditionsExporter(context.WrappedData.GetCalculations().Cast<StabilityStoneCoverWaveConditionsCalculation>(), filePath),
                 IsEnabled = context => context.WrappedData.Children.OfType<ICalculation>().Cast<StabilityStoneCoverWaveConditionsCalculation>().Any(c => c.HasOutput),
                 FileFilter = Resources.DataTypeDisplayName_csv_file_filter
             };