If you are having issues activating any of our Vocaloid voicebanks, please try the following:
(1) Run Program as Administrator. Howtech have created a great video (below) showing you how to Run Program as Administrator.
(2) Use the Vocaloid offline activation process.
If you are having issues authorizing a Vocaloid 3 or Vocaloid 4 library on Mac OSX (VOCALOID License Manager indicates "Error(2) " message.(Mac).
Please update to the latest Vocaloid License Manager V4.5.0 (link below).
Please also view the link below for further information regarding authorizing.