diff --git a/EduNetworkBuilder/NBSettings.cs b/EduNetworkBuilder/NBSettings.cs
index 345fee4..68b8085 100644
--- a/EduNetworkBuilder/NBSettings.cs
+++ b/EduNetworkBuilder/NBSettings.cs
@@ -38,6 +38,7 @@ namespace EduNetworkBuilder
         public string LastTrans1Lang = "";
         public string LastTrans2Lang = "";
         public string FormLastTransDir = "";
+        [XmlIgnore] //it is protected so it should not be serialized anyway.
         protected ActionCollection UserActions = new ActionCollection();
         [XmlIgnore]
         public bool ReplayMode = false; //Whether or not we are able to do replays
@@ -367,6 +368,17 @@ namespace EduNetworkBuilder
                     Properties.Settings.Default.ScoreList.Add(One);
                 }
 
+                Properties.Settings.Default.PuzzlesFailed.Clear();
+                foreach (string One in PuzzlesFailed)
+                {
+                    Properties.Settings.Default.PuzzlesFailed.Add(One);
+                }
+                Properties.Settings.Default.PuzzlesPassed.Clear();
+                foreach (string One in PuzzlesPassed)
+                {
+                    Properties.Settings.Default.PuzzlesPassed.Add(One);
+                }
+
                 Properties.Settings.Default.Save();
             }
         }