I have installed Draftsight 2017 SP2 on two different Windows 7 machines and neither one will activate. When you complete the activation information and hit OK the screen flashes and the Draftsight closes. No email ever arrives. I have removed and installed the software multiple times. I have deleted the SWactivation key in the registry a couple of times. Each time you open Draftsight the activation window comes up. You complete the information and click OK and the same thing happens. The screen flashes and the software closes.