Index: Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs
===================================================================
diff -u -r9c07cee1e1a14a24e2d949bf9b32f294f0988f1f -r23cc3cd6c57276d0cc0670abf9ec519b488e85ab
--- Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs	(.../CalculationConfigurationReader.cs)	(revision 9c07cee1e1a14a24e2d949bf9b32f294f0988f1f)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs	(.../CalculationConfigurationReader.cs)	(revision 23cc3cd6c57276d0cc0670abf9ec519b488e85ab)
@@ -135,10 +135,15 @@
             {
                 return XDocument.Load(xmlFilePath, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo | LoadOptions.SetBaseUri);
             }
+            catch (XmlException exception)
+            {
+                string exceptionMessage = string.Format(Resources.CalculationConfigurationReader_Configuration_contains_no_valid_xml_Reason_2,
+                                                        exception.Message);
+
+                throw new CriticalFileReadException(new FileReaderErrorMessageBuilder(xmlFilePath).Build(exceptionMessage), exception);
+            }
             catch (Exception exception)
-                when (exception is InvalidOperationException
-                      || exception is XmlException
-                      || exception is IOException)
+                when (exception is InvalidOperationException || exception is IOException)
             {
                 string message = new FileReaderErrorMessageBuilder(xmlFilePath)
                     .Build(CoreCommonUtilsResources.Error_General_IO_Import_ErrorMessage);