Hey, I'm not sure what I did but when I run my project I get a NullReferenceException at line -1. I can play my game perfectly but I dislike having the error (got to mean something is wrong even though you don't notice it).
this is what it sais:
NullReferenceException: Object reference not set to an instance of an object UnityEngine.GUILayoutUtility.EndLayoutGroup () UnityEngine.GUILayout.EndHorizontal () UnityEditor.AssetImporterInspector.ApplyRevertGUI () UnityEditor.ModelImporterInspector.OnInspectorGUI () UnityEditor.InspectorWindow.OnGUI () System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object parameters, System.Globalization.CultureInfo culture) [0x00000]
EDIT After restarting unity (shutting down unity took like 5 min) the error was gone.