Catten told me that because of RL constraints, he will not be able to provide macOS builds any more for the Cool VL Viewer.
If anyone wishes to step in in his place, let me know in PM.
I want to thank Catten here, for all the work done providing macOS builds over the past years and for helping to keep the viewer macOS-compatible.
Sadly, and for now, macOS users will need to build the viewer by themselves, from
sources; but fear not, since this is not a complicated process (just read the linden/doc/macOSBuildHowto.txt file in the sources tree, and follow the instructions given there).