Cannot generate scaffold per crash course

[shorero]

Trying to get up to speed with compound by following the crash course.

1. npm init todo-list-app: works
2. npm install (inside todo-list-app): works, with complaints about old versions of jade, minimatch, graceful-fs node-uuid
3. compound generate scaffold list name (inside todo-list-app, with the back tics): fails. "bash: exists: command not found"

There doesn't seem to be an OS binary named exists, so I did an npm install -g exists and repeated above steps. Same error at #3.