Index: Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/GuiServices/DuneLocationCalculationGuiService.cs
===================================================================
diff -u -r22b6bdeb7d18ce2492b61394783e0a93257859a7 -r3f08de6c9ea2fce2f5fc15302fda17c119b3798c
--- Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/GuiServices/DuneLocationCalculationGuiService.cs	(.../DuneLocationCalculationGuiService.cs)	(revision 22b6bdeb7d18ce2492b61394783e0a93257859a7)
+++ Ringtoets/DuneErosion/src/Ringtoets.DuneErosion.Forms/GuiServices/DuneLocationCalculationGuiService.cs	(.../DuneLocationCalculationGuiService.cs)	(revision 3f08de6c9ea2fce2f5fc15302fda17c119b3798c)
@@ -24,8 +24,11 @@
 using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Gui.Forms.ProgressDialog;
+using log4net;
+using Ringtoets.Common.IO.HydraRing;
 using Ringtoets.DuneErosion.Data;
 using Ringtoets.DuneErosion.Service;
+using RingtoetsCommonFormsResources = Ringtoets.Common.Forms.Properties.Resources;
 
 namespace Ringtoets.DuneErosion.Forms.GuiServices
 {
@@ -34,6 +37,7 @@
     /// </summary>
     public class DuneLocationCalculationGuiService
     {
+        private static readonly ILog log = LogManager.GetLogger(typeof(DuneLocationCalculationGuiService));
         private readonly IWin32Window viewParent;
 
         /// <summary>
@@ -67,6 +71,14 @@
                 throw new ArgumentNullException(nameof(locations));
             }
 
+            string validationProblem = HydraulicDatabaseHelper.ValidatePathForCalculation(hydraulicBoundaryDatabaseFilePath);
+            if (!string.IsNullOrEmpty(validationProblem))
+            {
+                log.ErrorFormat(RingtoetsCommonFormsResources.CalculateHydraulicBoundaryLocation_ContextMenuStrip_Start_calculation_failed_0_,
+                                validationProblem);
+                return;
+            }
+
             ActivityProgressDialogRunner.Run(
                 viewParent,
                 locations.Select(l => new DuneErosionBoundaryCalculationActivity(l,