I purchased CityEngine for Vue (64 bit) 16.1.2012 from Cornucopia 3D. It installed without problems but when I try to activate it I get a notification: "Invalid activation code". I copy/pasted the activation code from the email I got when I purchased CityEngine so there's no typing errors (or at least shouldn't be). I've also tried to type the activation by hand but the result was the same: "Invalid activation code".
I've tried to contact email@example.com about this but got no answer.
So, what to do to get it running?