ARIS Optimizer issues

Hi,

  i'm having troubles starting ARIS Business Optimizer. When i start it and try to log in to LOCAL server I get a message saying  "User 'system' has no license for using: ARIS Optimizer." During the installation everything went just fine and I had no problems applying the license Zip file.  Do you happen to know why can't I run ARIS Business Optimizer? I would appreciate any help you could give me. I don't know if it helps but I downloaded ARIS 9.6 as a student. Also, I had no troubles running and using ARIS Architect using "system" as username and "manager" as password.   Thank you for your time and effort!