I have run into a few problems with the Whitewater shelf tool.

I set up a flip tank and added the Whitewater shelf tool to it. After I was happy with the setup, I set the particle separation to 0.02 and saved the simulation to disk as well as all of the fluid geometry, e.g. surface_cache and compressed_cache.

I then saved the whitewater simulation to disk and configured the whitewater DOP to playback the simulation. At this point, the whitewater disappeared from the rendered output. I then decided to not save the whitewater simulation but when rendering the volume with motion blur, I end up with something like the attached image.

Any suggestions?