This is probably due to the new ImageTargetEventHandler used in the new sample in 2.8.7,

try replacing it with the a custom handler by copy-pasting the code from the DefaultTrackableEventHandler.cs

I've tried to copy the code, but there is another error, because the script depend on another script (ImageTargetUIEventHandler)

so I've simple added to ImageTargetTrackableEventHandler the following code:

  else if (component.gameObject.name == "cube")
  {
     component.enabled = true;
  }

because the name of my object is cube and it works. 

Now I've understood the underlying code. 

Thank you very much for your help!

Great.

i m using unity4.3.2 with vuforia 2.8.7.

i face the same problem by only see the teapot. as what dariocavada do, for me it doesnt work..

1. i import the fbx done by blender.

2. i try to change the scripts as following:

else if(component.gameObject.name == "dinning")
            {
                component.enabled = true;
            }

my 3D object (dinning) is still invisible. even the tower...

there is any solution?

Hi Chew,

I've used many other objects and I've removed the if statement.

Now my code looks like the following and it works with all objects:

 private void OnTrackingFound()
    {
        isBeingTracked = true;
        Renderer[] rendererComponents = GetComponentsInChildren<Renderer>(true);
        Collider[] colliderComponents = GetComponentsInChildren<Collider>(true);

        // Enable rendering:
        foreach (Renderer component in rendererComponents)
        {
            component.enabled = true;
        }

        // Enable colliders:
        foreach (Collider component in colliderComponents)
        {
             if(ImageTargetUIEventHandler.ExtendedTrackingIsEnabled)
                {
                    if(component.gameObject.name == "tower")
                    {
                         component.enabled = true;
                    }
                }
            else if(component.gameObject.name == "teapot")
            {
                component.enabled = true;
            }
        }

        Debug.Log("Trackable " + mTrackableBehaviour.TrackableName + " found");
    }

Hi  dariocavada,

I get the picture. Cos I just update my unity to 4.3, with not  familiar for the child and parent in new method.

yes, I get it work.

Thanks dariocavada.

Hi  dariocavada,

I get the picture. Cos I just update my unity to 4.3, with not  familiar for the child and parent in new method.

yes, I get it work.

Thanks dariocavada.