I am using blender version 2.73 on windows 8.1. I rendered an animation into a png sequence the first render worked fine. I then changed the scene, and tried to render it again. This time, I am getting nothing but a bunch of black images. They are not just dark or poorly lit, they are solid black. When I view the scene in rendered mode, I can see the image fine, but during the final render, I get nothing. Cycles doesn't seem to go through the usual rendering process of doing each frame section-by-section, it just instantly creates a bunch of black images in the output folder.
I get this message in the console after the render
Saved: C:\path_to_directory[image number].png Time: 00.00.00 (Saving: 00.00.00)
This is repeated once for each image.
Here is the .blend file along with an image texture and bump map used.
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