Cubase Pro 10.5 Crashing on Initialization

The program loads fine until it gets to VST Mixer then pauses for a while and just stops. I tried uninstalling and reinstalling Cubase unsuccessfully fixing the problem.

2019 Macbook Pro
8 core i9

Big Sur v 11.5.1

Interface - UA Arrow

Hi and welcome to the forum,

Update to the latest Cubase 10.5, please. If I’m not mistaken, it was 10.5.40.