maybe you know this
deeply buried in Nik Collection by DxO – Customer Support
I did this
Issues with Nik4 - #8 by Wolfgang
see also
Nik Upgrade silver efex not applying - #3 by Wolfgang
and some nagging
About Nik 4 - SilverEfex 3 & Viveza 3
About Nik 4 - SilverEfex 3 & Viveza 3 - #5 by Wolfgang
Concerning Nik’s long history and DxO even promoting it’s 25th anniversary, I simply don’t understand, why dropping the crowd, that has supported Nik ever since (and some of them since NIK Filter).
“Giving up compatibility to reduce the user base – simply brilliant” [sarcasm off].
Wolfgang