I upgraded to 2017 64 bit before realizing it won't run on my Windows Vista machine. I can't upgrade to a later version of Windows (Windows upgrade is broken can't fix it). I'm looking for a download of 2016 but no luck so far. I found 2015 SP2 on CNET and installed that but it asks for activation every time I start it. Do you have legacy versions of Draftsight on the web site?