I tried the same projects on my MacBook Pro with Sierra and N8.3.1
On MacBook I can’t even import the file - somehow I could do it only once but when trying to save the Nuendo crashed instantly.
From then on, I cant ANY XML files. no score.
I tried different files and not only the Nuendo is not importing but also after trying to import the Nuendo “throws me” to another folder in the import window.
I think this a big thing and would love to see if anyone else have the same problem.