Oculus build causing problems in Unity

Hi , As title says, There is problems when using Oculus option in Unity. Once i tick the box to use Oculus rift. the editor will crash when i press play. To get round this i would untick the box once i'd made a standalone build then save and exit Unity and run the standalone build. Unfortunately that also is causing the build to crash now . So i have attached the output log in hope somebody can help me out.

Thanks for reading

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