Index: dam clients/DamUI/trunk/src/Dam/Forms/DamPlugin.cs
===================================================================
diff -u -r318 -r319
--- dam clients/DamUI/trunk/src/Dam/Forms/DamPlugin.cs	(.../DamPlugin.cs)	(revision 318)
+++ dam clients/DamUI/trunk/src/Dam/Forms/DamPlugin.cs	(.../DamPlugin.cs)	(revision 319)
@@ -656,6 +656,9 @@
             catch (Exception e)
             {
                 LogManager.Add(new LogMessage(LogMessageType.FatalError, typeof(Interface), string.Format("{0}", e.Message)));
+                string openingMessage = LocalizationManager.GetTranslatedText(this, "CalculationFailed");
+                string paragraphSepatator = Environment.NewLine + Environment.NewLine;
+                LocalizedMessageBox.ShowTranslatedText(openingMessage + paragraphSepatator + e.Message);
             }
 
             SetProperControlsAfterCalculation();