Understood. Everything turned out to be trite. Somehow, I don't know how, all objects were moved outside the max workspace zone, somewhere very, very far from the center of coordinates, and therefore they were no longer adequately understood by max. It is corrected as follows - in the selection by name, select everything that is there - open the "transform toolbox" window in the edit menu and there simply click on the "center" button at the very bottom. All objects are moved to the center of coordinates and become clear to 3D Max. Attached is the corrected scene. I have already moved the objects there from the center of coordinates so that they do not overlap each other.
snow rider 3d