I had to go through a process with ilok, just like authorizing a regular purchase. It did however put the plug in my program files x86/vst folder. It kept asking for an authorization in C3, but during that process, you have to use the "try" button next to authorize.
On the plug.......I am getting decent results so far, but it seems to lose some of the B5 warmth. The Demo is good for 15 days, but the sale is only good till April 5. At this point, I won't pay $79 for it, but I might do $49. At least I have a few days to decide.