Packaged build not displayed on Oculus Rift (sound playing)

We are running in some issues when trying to play our packaged build on the Oculus :

  • The app starts, but there is no visual display on the headset (even the chaperone is not visible)

  • The sounds of the app are playing, and apparently the interaction as well.

  • Running the exact same build on the Vive doesn’t cause any problem

  • Running the project in the Engine, eveything is displayed on the Oculus properly

  • Third-party apps are enabled in the Oculus home

  • Other apps run perfeclty fine on the Oculus

Does anyone have an idea of what could cause this? Is it tied to the demo PC not being properly setup, or would it be more likely a packaging issue?