New Oculus rift not working on build

Hello,

I brought the new oculus rift this week (Europe) for working with Unity3D

Unity 5.4.1f1, Oculus utilities 1.8.9 installed.

When I'm working on the Unity Editor, everything is working fine, oculus detected, camera head tracking working fine.

But when I build a .exe, nothing works, the Oculus Rift is not detected.

conf :

Dx11
GC : Gtx970
Proc : i76700

The oculus is working fine with the oculus market place.

The only thing working for me is to build in development build...but that not acceptable for any customers.

Any ideas?

Edit : in output_log.txt, in release mode, there is a error line saying : "Security error. This plugin is invalid!" displayed multiple times. Nothing in development build.

 

it seems to be some invalid filepath