balajikarthikeyan G Can you please provide details about the 3D model? We have experienced the same issue when using a model built in Creo Illustrate 4.0 and imported in TWX Studio. If that is the case, I would recommend to use Creo Illustrate 3.0 for better view.
Also for the benefit of doubt, can you please check viewing other 3D models? May be a problem with that specific 3D model!! How about viewing the Studio Sample projects (like quadcopter etc.,) ?