problem with stereoscopic 360 capture in ue4

Hi, i am facing problems render out the correct images for my sequences animation, the shadow (directional Light) only appears on one eye and there are some weird black lines across the images.
I also try to follow the solution with this link: Capturing Stereoscopic 360 Screenshots and Movies from Unreal Engine 4 - Unreal Engine
but still cannot solve my problems, and when i try to create a new default project with just some simple meshes and lights, the shadow of both eyes looks fine, but the black lines remain there. (like the images below)alt text

Does anyone know how to solve it ? thanks