cinemachine record problem

when i try to record Cinemachine Camera ((CM Dolly1) (Animator)) it says:

NullReferenceException: Object reference not set to an instance of object
UnityEditor: EditorWindow.RefreshStylesAfterExternalEvent() (at:C:buildslave/unity/build/Editor/Mono/EditorWindow.cs.1055)

it worked.... i just had to restart computer and unity... also there was this baking problem. in my game my characters didnt move without inspector->bake option. now its working also.