[James Owen]

I have pre-composed cubes and I am trying to rotate a camera around the cubes. Every so often I get vertical lines appearing then one of the cubes has its edge to the camera. I have tried making the pre-composed compositions 4000 x 4000, changing the mode to Alpha Add , and masking the pre-composed layer with a feathered edge, as suggested here in these threads but nothing has worked. How do I get rid of these lines?