Ozone 11 master assistant not working in Cubase 12

Trying to use Ozone 11 in Cubase 12 in Windows 10.
While running the assistant it shows the screen that it´s analyzing music but before showing the results the screen vanishes and loads again at the default screen as if I hadn´t run the assistant.
If I add modules one by one it works fine.
Resources are at about 50% so it doesn´t seem to be a CPU issue.
Anyway if I run the assistant in a very small project it runs fine.