Arnold Render- Batch Render Won't Render Alpha Channel


#1

When batch rendering with Arnold Render(1.1.0.3) in Maya 2015 (Windows 7), I get an alpha channel rendering a single frame. When batch rendering an entire animation I do not get the alpha channel in the images to composite. Initially I used .png, it didnt worked. Then I tried .tiff and that still did not work. Any help would be appreciated.