Unable to start any new Nik Collection 6 applications after upgrade from NC 5

On macOS, the apps with the reworked UI need resources that have been installed in a completely separate folder. If that folder is absent, incompletely filled or renamed, those apps won’t start. Can’t tell where this folder is on Windows and if it also should exist, but someone with Windows could possibly find out.

See Nik Collection v6 - #14 by platypus for more.