No inspector window with Unity 2019.1-2019.3

Hi,

I am experiencing the following error with the new version of Unity Editor (freshly installed), either 2019.1 or the alpha version of 2019.3, both return me the same error:

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.HostView.DeregisterSelectedPane (System.Boolean clearActualView, System.Boolean sendEvents) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:425)
UnityEditor.HostView.SetActualViewInternal (UnityEditor.EditorWindow value, System.Boolean sendEvents) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:38)
UnityEditor.HostView.set_actualView (UnityEditor.EditorWindow value) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:31)
UnityEditor.DockArea.OnEnable () (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:172)
UnityEditorInternal.InternalEditorUtility:LoadSerializedFileAndForget(String)
UnityEditor.WindowLayout:LoadDefaultWindowPreferences()

The inspector window doesn’t show anything and remains black, I have the feeling this is related.

I am on Windows10. Can anyone help me with this?

Thanks,
Fabio

same here