VR Post Process only rendering in left eye

Hey There, I am working with mod tools for a VR game, I’ve created a post process material (From this tutorial UE4 Tutorial: Radial Blur (Request) - YouTube)

The problem is when I enable the post process in game it only renders in the left eye leaving the right eye completely black (I am using an HTC Vive), does anyone know if this is a known issue or how to fix it? Here is a picture of the material I am using