i try to render a bathroom scene, that is ok when i test render with 400x300 pixels while failed with a higher resolution rendering (1600x1200 or above).
After setting the final render to 1600x1200 or partly render(using limited region funtion), the rendering process is smooth before "Resampling edges". When the rendering is almost finished, the render log display "Frame rendering done" and "Antibanding", it will be failed and the lightwave scene have to be closed.
I see you are rendering with OB6, Update to OB8 which is already released and this problem will go away (Frame aspect ratio crash bug, not sure why but some wide x height of the render size causes crash in the older Kray when antibanding...)