I really need some expertise :/ I bought Sony Vegas pro 9.0 a while ago, and due some problems I had to re-install my program today. The installment goes okay until I reach the tab where I'm supposed to write in my serial number. Every time I do, it says that "your trial has expired", and it keeps popping up every time I write it. I don't have a trial version, and I use the serial number I got with the package. I've double checked the letters and numbers several times, and it's correct. I've also tried to re-install it several times after, but it's the same thing.
What am I doing wrong?
Thanks in advance