diff --git a/ViewModel/Grading/GradingResultVM.cs b/ViewModel/Grading/GradingResultVM.cs
index 609d2c6..b3e483a 100644
--- a/ViewModel/Grading/GradingResultVM.cs
+++ b/ViewModel/Grading/GradingResultVM.cs
@@ -283,44 +283,53 @@ public class GradingResultVM : BaseViewModel
     [Log]
     private void SaveToCsv()
     {
-        string strBaseUrl = AppDomain.CurrentDomain.BaseDirectory;
-        string filePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory,"csv", "histroy.csv");
-        Measurements info = algorithmResult.measurements;
-        string line =
-                        $"{DiamondCode}," +
-                        $"{Wight}(ct)," +
-                        $"{FormatDouble_A2(info.M1)}(mm)," +
-                        $"{FormatDouble_A2(info.M2)}(mm)," +
-                        $"{FormatDouble_A2(info.M3)}(mm)," +
-                        $"{FormatDouble_P2(info.TABLE)}%," +
-                        $"{FormatDouble_P2(info.CROWN_HEIGHT)}%," +
-                        $"{FormatDouble_P2(info.PAV_DEPTH)}%," +
-                        $"{FormatDouble_P2(info.TOTAL_DEPTH)}%," +
-                        $"{FormatDouble_A2(info.CROWN_ANGLE)}°," +
-                        $"{FormatDouble_A2(info.PAV_ANGLE)}°," +
-                        $"{FormatDouble_A2(info.CULET_SIZE)}(mm)," +
-                        $"{FormatDouble_A2(info.GIRDLE)}%," +
-                        $"{calGirdleName(info)}," +
-                        $"," +
-                        $"," +
-                        $"{GetGradeEnName(GetGradeOrder(CutLevelTotal))}";
-        if (File.Exists(filePath)) { 
-            using (var writer = new StreamWriter(filePath,true))
+        try
+        {
+            string strBaseUrl = AppDomain.CurrentDomain.BaseDirectory;
+            string filePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "csv", "histroy.csv");
+            Measurements info = algorithmResult.measurements;
+            string line =
+                $"{DiamondCode}," +
+                $"{Wight}(ct)," +
+                $"{FormatDouble_A2(info.M1)}(mm)," +
+                $"{FormatDouble_A2(info.M2)}(mm)," +
+                $"{FormatDouble_A2(info.M3)}(mm)," +
+                $"{FormatDouble_P2(info.TABLE)}%," +
+                $"{FormatDouble_P2(info.CROWN_HEIGHT)}%," +
+                $"{FormatDouble_P2(info.PAV_DEPTH)}%," +
+                $"{FormatDouble_P2(info.TOTAL_DEPTH)}%," +
+                $"{FormatDouble_A2(info.CROWN_ANGLE)}°," +
+                $"{FormatDouble_A2(info.PAV_ANGLE)}°," +
+                $"{FormatDouble_A2(info.CULET_SIZE)}(mm)," +
+                $"{FormatDouble_A2(info.GIRDLE)}%," +
+                $"{calGirdleName(info)}," +
+                $"," +
+                $"," +
+                $"{GetGradeEnName(GetGradeOrder(CutLevelTotal))}";
+            if (File.Exists(filePath))
             {
-              
-                 writer.WriteLine(line);
+                using (var writer = new StreamWriter(filePath, true))
+                {
+
+                    writer.WriteLine(line);
+                }
             }
-        }
-        else
-        {
-            File.Create(filePath).Close();
-            string header = "Diamond Code,Wight,Measurement1, Measurement2, Measurement3, Table, Crown Height,Pavilion Depth, Total Depth,Crown Angle, Pavilion Angle,Culet Size, Girdle Percent,Girdle Name, POL or Pol/ Sym,SYM,CUT - PROP";
-            using (var writer = new StreamWriter(filePath, true))
+            else
             {
-                writer.WriteLine(header);
-                writer.WriteLine(line);
+                File.Create(filePath).Close();
+                string header =
+                    "Diamond Code,Wight,Measurement1, Measurement2, Measurement3, Table, Crown Height,Pavilion Depth, Total Depth,Crown Angle, Pavilion Angle,Culet Size, Girdle Percent,Girdle Name, POL or Pol/ Sym,SYM,CUT - PROP";
+                using (var writer = new StreamWriter(filePath, true))
+                {
+                    writer.WriteLine(header);
+                    writer.WriteLine(line);
+                }
             }
         }
+        catch (Exception ex)
+        {
+            Logger.Error($"Auto Save Error: {ex.Message}");
+        }
     }
 
     private void saveTempDS(string selValue)