I’ve got the material working in a slightly different way using moadib’s code in 4.20.3, here’s the material, and a video workflow: UE4 Tutorial: Radial Blur (Request) - YouTube
Just in case anyone is interested 
I’ve got the material working in a slightly different way using moadib’s code in 4.20.3, here’s the material, and a video workflow: UE4 Tutorial: Radial Blur (Request) - YouTube
Just in case anyone is interested