Happens to me the same, and do not understand. I already spent in his day more than 3000 euros on a MacPro , I bought all the original sotware . I missed accounts and to update myself and work rigmanager have to invest around 5000 euros in other current MacPro (mine is not upgradeable to the current version ), pay the upgrade of Cubase, Ableton Live , plugins Waves , changing sound card and This has put me on the road ..... I am not a profesinal and my hardware and sotware works perfectly , is stable . So difficult it is that things function in earlier media ? I ask from the most absolute ignorance , but I think here is more abuse than lack of real possibility. I ultimately use a windows emulator , but not always work well ..