Ok, I also met this problem the same to you, Here is the solution:
-When it's prompt you to put the license number please put this key:
75VNU-TH1RR1-L7-P03-C01-S3S9MD-2YN-3AUS after that continue your instalation, this should be ok already :). From Soeng Sok Sambo, 855 16 313 861, sambosoeng@yahoo.com, Sihanoukville, Cambodia. :D