hi. i have an old macbook pro from 2012, with intel core i7, and a high sierra system 10.13.5. i used tractor scratch with 2 turntables years ago i also have a x1 controller...i still have the equipment. in the forum sb told me, i should buy the old software second hand, i did. it still doesn-t run…the audo-4dj controller blinks…but the system shows the usb device, can sb help me? i-m sick of native- intruments-chatbots…bernhard