There was nothing in the download-Installation that rejected Windows 8 Operating system.
Am I now just out of luck, no way to register license key?
Seems a little cavalier of AutoDESK to just dismiss this issue when I have already paid for the software.
Have 19 days left.
If you check the system requirements when you buy the program, you will see that Windows 8 is not listed.
If you purchased Subscription then you will receive 2014 once released. In the mean-time, I would recommend installing on Windows 7 or Windows XP as the system requirements state for 2013.