Unity 2018.1 - Vuforia Ground Plane and RigidBody falling through ground plane

Friends, I need a support… I tried using VUFORIA GROUND PLANE DETECTION with Unity 2018.1

I found that when I add rigid body to the objects that I need to place on the plane, the objects just fall through the ground plane… (I have added the collider to the ground plane as well)…

I also was able to recognise that the colliders get disabled until the object is placed on the plane itself… So tried using ISKINEMATIC until the object is recognised on the plane and tried to disable the ISKINEMATIC once the object is recognised on the plane… But this did not work even…

I am not sure where I am making the mistake

Can anyone support me with the solution to this problem??

I have the same problem. Don’t find a solution to that either. Help wouldn’t be bad.