Please, how to repair error Render in Rhino?

I am Vietnamese. Would you help me ? Please
The first, I have installs “Rhino 5 - 64x & Vray 2.0” and Gem Matrix 8 after. When i render with Rhino 5 _ Vray 2.0, is a box messeger error open:
Error : Object Required: ‘RhinoGetPluginObject (…)’
I can not continue to work with Rendering Vray

Thanks you