How to get Quartz Composer working on macOS High Sierra? I'd like to install Quartz Composer. So I head to Downloads Center and download Additional Tools for Xcode 9 package which contains Quartz Composer.

After copying the app elsewhere, launching it, and clicking Get Started I get this error below. How do I get it working?
Download the latest (its still old) graphics tools here:
https://developer.apple.com/download/more/

The DMG for XCode 7.2 contains a version of Quartz Composer that runs on High Sierra.