Have a look here - Roger Schumman provided the solution, if you have Prologue from an earlier version of Cubase.
Mystic, Prologue and Specter not in Cubase 12 - Cubase - Steinberg Forums
Have a look here - Roger Schumman provided the solution, if you have Prologue from an earlier version of Cubase.
Mystic, Prologue and Specter not in Cubase 12 - Cubase - Steinberg Forums