unable to load shim DisplayShim initialization failure

Hi All,
I ran an Oculus game in my PC and I got the following error


Oculus VR Unity Wrapper plugin
unable to load shim DisplayShim initialization failure

I have installed the Windows 8.1, Oculus SDK 0.8.0.0 and Unity 5.2.2f1, for it Could anybody help me to fix it?
Thanks for your time
Regards
Alejandro