Merge pull request #75 from Zenodeon/SceneSerializationUtility-Deleted-Scene-Check

Update SceneSerializationUtility.cs

Author: arimger

Assets/Editor Toolbox/Runtime/Serialization/SceneSerializationUtility.cs

@@ -43,7 +43,13 @@ private static void RefreshCache()
             var buildIndex = -1;
             foreach (var scene in EditorBuildSettings.scenes)
             {
+                if (string.IsNullOrEmpty(scene.path))
+                {
+                    continue;
+                }
+                
                 buildIndex++;
+
                 var sceneIndex = scene.enabled ? buildIndex : InvalidSceneIndex;
                 var sceneAsset = EditorGUIUtility.Load(scene.path) as SceneAsset;
                 if (sceneAsset != null)
@@ -80,4 +86,4 @@ public static bool TryGetSceneData(SceneAsset sceneAsset, out SceneData data)
 
         public static int InvalidSceneIndex => -1;
     }
-}
+}