Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs
===================================================================
diff -u -r0b21aa321e05e40b31eb5ace3adc8bb9cebea68d -rdbb10eeea682a788576e9f91697ce896e4542263
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision 0b21aa321e05e40b31eb5ace3adc8bb9cebea68d)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/UpliftVanCalculator.cs	(.../UpliftVanCalculator.cs)	(revision dbb10eeea682a788576e9f91697ce896e4542263)
@@ -83,14 +83,12 @@
 
             try
             {
-                upliftVanKernel.Validate();
+                return upliftVanKernel.Validate();
             }
             catch (UpliftVanKernelWrapperException e)
             {
                 throw new UpliftVanCalculatorException(e.Message, e);
             }
-
-            return new List<string>();
         }
 
         private IUpliftVanKernel CalculateUpliftVan()
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs
===================================================================
diff -u -r0b21aa321e05e40b31eb5ace3adc8bb9cebea68d -rdbb10eeea682a788576e9f91697ce896e4542263
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs	(.../UpliftVanKernelWrapper.cs)	(revision 0b21aa321e05e40b31eb5ace3adc8bb9cebea68d)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Kernels/UpliftVan/UpliftVanKernelWrapper.cs	(.../UpliftVanKernelWrapper.cs)	(revision dbb10eeea682a788576e9f91697ce896e4542263)
@@ -192,10 +192,9 @@
 
                 string result = wtiStabilityCalculation.Validate();
                 ValidationResult[] deserializedResult = WTIDeserializer.DeserializeValidation(result);
-                return deserializedResult.Select(r => r.Text).ToList();
-
+                return deserializedResult.Where(r => r.MessageType == ValidationResultType.Error).Select(r => r.Text).ToList();
             }
-            catch (Exception e) when (!(e is UpliftVanKernelWrapperException))
+            catch (Exception e)
             {
                 throw new UpliftVanKernelWrapperException(e.Message, e);
             }