Mental Ray现已成为NVIDIA公司之全资子公司，是公司最引以为荣的产品，作为业界公认的唯一可以和Render Man相抗衡的电影级渲染器，Mental Ray凭借其良好的开放性和操控性，以及与其他主流三维制作软件良好的兼容性而拥有大量的用户···

Now, this new installer changes the mentalray.mod file located here on Windows:
C:\Program Files\Common Files\Autodesk Shared\Modules\Maya\2017\

Remove the mod files from previous betas in this directory:
C:\Users\\Documents\maya\2017\modules

This is a directory Maya knows to look at to override the previously installed module. Keep it in a safe place if you want to be able to go back to Beta7.