I have a problem, pusher physics doesn’t push the boxes off the conveyor belt, it just penetrates them. What should I do to make him see the collision and drop them?
Most likely, the boxes are not included in the physics simulation. This is the case by default.
If you really want to use physics in your simulation, then you should either:
a) Use Physics Feeder to create the boxes.
b) Use Physics Converter to convert the boxes into physics.
Both these components are found under the eCatalog Physics folder.