Plymouth Rock Studios, the real estate arm in charge of building the production facility and leasing its space, and Rock Entertainment, the creative arm of that endeavor, are no longer affiliated and will not have any direct ownership or management influence over each other. David Kirkpatrick, CEO of Rock Entertainment, said yesterday’s announced split formalized a division that had been made between the real estate team and the creative members of the venture. “Now it’s really focused on being infrastructure, but that’s critical,’’ Kirkpatrick said. “You need the railroad tracks to run the trains.’’








