Oh, I thought I remembered seeing something about this: there's an
open issue for text-only templates like the one being distributed by ETO. If it were an HTML form we probably could have dropped it in the Standard_Forms directory (we probably need to open an issue for a private templates directory), but since it's text only, it's not being found because of issue #325.
Sorry about that, but we'll get working on it. That's the great thing about going through ETO's exercises, they're covering a lot more use cases than I normally do on my own.