Is this what you are talking about?
Its seems to recognize the functions now, or maybe a new error is preventing the compiler from reaching that error.
New error codes:
Error [SM5] (Node SceneTexture) Coercion failed: MaterialFloat3 Local0 = TransformViewVectorToWorld(MaterialFloat3(0.00000000,0.00000000,1.00000000));
: float3 -> float2
Error [SM5] SceneTexture expressions cannot be used in opaque materials
p.s. I turned accurate velocities on in the project setting.