I do Understand that PBR makes things look nice and it's where a lot of creators want things to go, but i am quite shocked older computer owners have been totally blocked out , especially Mac, my comp is old but still quite capable running Mojave with a 4gb metal card, I do graphics work quite happily ..anyhoo ..went to log in and found my FS viewer was blocked , not that I read or concentrate on reading forums, I just create, there didn't seem to be any warning about my vers being blocked, I found both FS and the SL viewer had no versions that would install, btw my previous vers of FS was working fine in SL .now I have had to start using Singularity and to a big extent re-learn . anyhoo just annoyed that peeps with older machines appear to have been blocked , we cant all afford new machines every few years ..god I sound like I am a Grumble Bum lol...Just sayin...if the version of viewers works and doesn't hurt anything , why block it ...have a wonderful day everyone .