Hello!
so I invegistated problem and found that problem is not in that blueprint but in C++ class that is parent of this blueprint. When I commented all attachTo usages, package works fine… I am sure that I used that code for like 2 months i dont have a clue why i started failing now…
CameraBoom = CreateDefaultSubobject<USpringArmComponent>(TEXT("CameraBoom"));
//CameraBoom->AttachTo(RootComponent);
CameraArmLength = MaxCameraDistance;
CameraBoom->TargetArmLength = CameraArmLength;
CameraBoom->SetRelativeLocation(CameraZoomedOutVector);
CameraBoom->bUsePawnControlRotation = true;
CameraBoom->bEditableWhenInherited = false;
FollowCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("FollowCamera"));
//FollowCamera->AttachTo(RootComponent);// , USpringArmComponent::SocketName);
FollowCamera->bUsePawnControlRotation = true;
FollowCamera->bEditableWhenInherited = false;
CollectionSphere = CreateDefaultSubobject<USphereComponent>(TEXT("CollectionSphere"));
//CollectionSphere->AttachTo(RootComponent);
CollectionSphere->SetSphereRadius(200.f);
CollectionSphere->bEditableWhenInherited = false;
GetMesh()->bEditableWhenInherited = true;