Yes it’s always set to by object and I do the same things as you are, but objects are still visible to the camera. I tried restarting Max, re-adding the object in the scene manager, regrouping the object but nothing.
I just tried something else, when I add the objects in the group seperately then it works but when I add the group it won’t work. The problem is group objects. Please don’t tell me you don’t support group object because if I have to add all objects to the manager it will be a mess, and moreover scene manager can’t handle it.
So what to do about groups?
Edit: I tried the not visible option by layer but I get the same problem, it does nothing.