Logitech updated this again and they note bug fixes. The surprise is that the bug preventing keyboard configuration is gone.
After installing it, I ended up going into ~/Library/Preferences and deleting all of the Logitech-related files and restarting, but I can configure my keyboard again.
After installing it, I ended up going into ~/Library/Preferences and deleting all of the Logitech-related files and restarting, but I can configure my keyboard again.