diff --git a/Scripts/Runtime/Utils/UnityTesting.cs b/Scripts/Runtime/Utils/UnityTesting.cs
index 9452657..a8fdadc 100644
--- a/Scripts/Runtime/Utils/UnityTesting.cs
+++ b/Scripts/Runtime/Utils/UnityTesting.cs
@@ -85,7 +85,7 @@ private static void StoreBase(UnityBuilding.BuildBehavior? behavior, BuildingDat
             var fileName = Path.GetTempPath() + "/" + BaseFileName;
             using var stream = new FileStream(fileName, FileMode.Create);
             using var writer = new StreamWriter(stream);
-            writer.WriteLine(JsonUtility.ToJson(behavior));
+            writer.WriteLine(behavior == null ? "<null>" : JsonUtility.ToJson(behavior.Value));
             writer.WriteLine(JsonUtility.ToJson(overwriteData));
         }
 
@@ -103,7 +103,8 @@ private static bool LoadBase(out UnityBuilding.BuildBehavior? behavior, out Buil
             {
                 using var stream = new FileStream(fileName, FileMode.Open);
                 using var reader = new StreamReader(stream);
-                behavior = JsonUtility.FromJson<UnityBuilding.BuildBehavior?>(reader.ReadLine());
+                var behaviorStr = reader.ReadLine();
+                behavior = behaviorStr == "<null>" ? null : JsonUtility.FromJson<UnityBuilding.BuildBehavior>(behaviorStr);
                 overwriteData = JsonUtility.FromJson<BuildingData>(reader.ReadLine());
             }
             finally
diff --git a/package.json b/package.json
index 7d718b2..5183ae8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "org.pcsoft.build-tooling",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "displayName": "Build Tooling",
   "description": "Add a build toolbar into unity to create and run build very easy.",
   "unity": "2021.1",
@@ -12,7 +12,7 @@
   ],
   "dependencies": {
     "com.marijnzwemmer.unity-toolbar-extender": "1.4.1",
-    "org.pcsoft.editor-ex": "1.1.7"
+    "org.pcsoft.editor-ex": "1.1.8"
   },
   "author": {
     "name": "Pfeiffer C Soft",