I just got my copy authorized yesterday. When I opened it up in my daw it prompted me to authorize. I got the invalid serial# message 4 times. After closing it out I went to the "product portal" I had downloaded and hit the Add serial# button. It accepted and authorized it using the Exact #s I had been entering. I also got the vocal doubler, and a seperate ozone imager. Played with them this morning. The imager is awsome. All free. mark