Main camera in a minimum default project

i try this but i get a error when compiled :

void USceneComponent::SetupAttachment(USceneComponent *,FName)': el argumento 1 no puede convertirse de ‘UCapsuleComponent *’ a ‘USceneComponent *’

void USceneComponent::SetupAttachment(USceneComponent *,FName)': el argumento 1 no puede convertirse de ‘UCapsuleComponent *’ a ‘USceneComponent *’

y try a recast but i suppose no possible

other Idea is create a cameraActor, in the Actor but when play the aplication,i think the camera move and the proportie movable is set but i don´t see change the camera view