Connor Cummings, of Rockaway, N.J., and an 18-year-old pal managed to get onto an upper floor of the landmark hotel overlooking Central Park with several pieces of camera equipment Wednesday night, despite not being guests there, police said. They then attempted to climb scaffolding in an interior shaft leading to the roof of the 52 story luxury E. 57th St. hotel, police sources said. Cummings and his friend were nearing the roof when Cummings slipped and fell nine stories, crashing onto a 43rd floor landing, police said. He died at the scene.