Hey @jonji Thanks for your post!
Do you have other NI effects plugins like Raum or Choral? Do they work for you in Cubase 12?
I have hard crashes with Cubase 12 and various NI effects plugins, as posted here: Cubase 12: Hard Crash With Native Instruments Effect Plugins
If you have NI effects plugins, could you check whether they are also on Cubase 12’s blocklist?
Thanks & all the best