I had a 2016 GT/CS that I loved. I am daily driving a 2018 GT350 I bought a couple of months back used (3800 miles on it then) and I am loving it. Amazing car. I might be "killing" the value by daily driving it, but I'm getting my money's worth in my mind. :)
Same thing happened to me. I tried downloading it multiple times Once I even downloaded directly to the USB stick. Every time I tried to extract the archive I got an unspecified error. I tried Windows extract and 7zip to extract the files. Same error with both utilities.