This is bizarre.
I've modified the registry key several times, as follows:
C:\Program Files\Cakewalk\Z3TA+ 2
C:\Program Files\Cakewalk\Z3TA+ 2\Programs
C:\Program Files\Cakewalk\Z3TA+ 2\Programs\Programs
C:\Cakewalk Content
C:\Cakewalk Content\Z3TA+ 2
C:\Cakewalk Content\Z3TA+ 2\Programs
With exactly the same results each time
I've copied all of the program files so it *should* be finding them.
Glad I've not tried on my DAW!!