Self Erector topples on a contruction site and no one is injured, including the operator with the cab at the top of the tower. The video link shows the outrigger pads on some plywood, on firm ground. It appears that it wasn't a soils problem which is often the case. Proper amount of ballasting comes to mind as a potential problem. Assuming that's not the issue, we had an incidnet years ago in Seattle where a self erector could not make a pick. So they lifted the load with the forklift, strapped it to the crane and then removed the forklift. Is it possible that they were loading the crane by hand on a masonary job? I'm glad to see that no one was hurt.
The videolink is below for a little more info.