i tried to connect my computer to the mpc4000 for file transfer.i still have a macG3 with macOS 9.1 ,so i had to download extra usb card support .no problem ,but when i tried to load aksys2.5.3 it said:could not find any s 5/6000 samplers!do i have to prepare anything on the mpc before or is it a computer problem(i guess)?
