Hi stuart,
Yes, it is a known issue and we will release a new package including the fix very soon (we are waiting to include other fixes because more issues will appear for sure). In the meanwhile you can just copy or link zmoddev-2.2 to zmoddev (which should be the real name).
Take into account that zmoddev and the tutorial are in an alpha version

But with your feedback we can make both great.
Thank you and don't hesitate to report any other issue!