Hi Regaltwo I did a quick couple of animation test and had no problems with adding an EcoSystem to a plane and terrain and then tilting, raising/lowering etc. (Maybe I didn't understand your scene correctly - if so my apologies) Are you using the (current) latest 5.09 patch? Finally - a little known option - an icon that is used to ignore a object when populating an EcoSystem (see attached) if this might help? Kind regards