I just updated to PS2019 from 2018. NIK and Topaz plugins disappeared. Par for the course. They were working fine in PS2018.
When I tried to drag the plugin folders and files from the PS2018 Plugins folder, I was stymied. Seems the Plugins folder for PS2019, containing Generator, is a Read-Only.
I cannot seem to change the R/O properties so I cannot copy or move the Plugins from PS2018 to the Plugins folder for PS2019.
Any suggestions?