True it's a programming error, but it wouldn't hurt anything to have quickstart do an "idiot-check" on the name you give it. There are a lot of modules/components in Python, and quite a few components to TG itself that a new user/developer might not remember or even know about--either somebody new to Python and/or to TG. There will probably be a lot of people who are learning Python and TG at the same time.
It would be helpful for the overall user experience if the thing called "quickstart" prevents you from creating a mess like that your first time out. Imagine a stream of errors being your first taste of TG! Most people would give up on it right then. And it wouldn't be difficult to implement.
