I have both Cubase Pro 8 and Nuendo 7 installed on my Windows 10 machine.
I also have Vocaloid for Cubase 4 installed and it works as expected with Cubase.
However, sometimes when Nuendo is launching it will freeze and report a serious problem when the Vocaloid Editor is loading. Sometimes Nunedo will laumch without errors, but if I go to “Plugin Information” → “Program Plugins” and check “Vocaloid 4 Editor” the application will crash.
Thank you for looking into this issue.