I GOT IT WORKING!! Indeed, I had at one point installed ckb-next because there was no ICue version for OSX. However, I uninstalled it because it was crap/not-what-I-hoped-for. However, it left "droppings" on the uninstall that ended up blocking OSX ICue from recognizing my Corsair K95 Platinum.
Here are the steps to run in a terminal:
killall -KILL ckb
killall -KILL ckb-next
sudo launchctl unload -w /Library/LaunchDaemons/org.ckb.daemon.plist
sudo launchctl unload -w /Library/LaunchDaemons/org.ckb-next.daemon.plist
sudo rm -rf /Applications/ckb.app
sudo rm -rf /Applications/ckb-next.app
sudo rm -rf /Library/LaunchDaemons/org.ckb.daemon.plist
sudo rm -rf /Library/LaunchDaemons/org.ckb-next.daemon.plist
sudo rm -rf /Library/Application\ Support/ckb-next-daemon
Good luck. Hopefully this will work for you too.
John