Ugh knew this would happen. Specifically made a topic a long time ago "Please accommodate older OS X versions".
Waiting so long for something like this and being gated off from it purely because you never fixed something that wasn't broken. Surely they know that audio people are conservative with updating due to compatability and things breaking and new software generally just straight up bogging down machines performance-wise especially on older machines. I appreciate it is still in beta though. Although somehow now I just can't see the editor supporting older OS X versions. Depressing.