Why isn't a macOS 10.12.1 installer downloadable from the App Store?
I keep getting "Available Updates have changed" modal dialog, and can't install the update.
Trying to install 10.12 says "You can't upgrade this version of macOS because a newer version is installed."
Eventually found "sudo softwareupdate -i -a"
which will install the update (WHEN AppStore.app IS NOT RUNNING!).
Make sure to restart immediately after this.