I'm using Blender 2.78a, Blendingo 3.8.25, Indigo 4.0.45.
I rendered one small scene. It's coming ok in Reinhardt Tone Mapping.
If I change Tone Mapping to Camera or Filmic or Linear, it gives black output.
I tried to tweak the Tone Mapping values; but nothing works.
I load Indigo Benchmark scene and I'm able to change the tonemap.
I'm not able to do same only on my scene.
I'm new to Indigo.

I'm attaching my pig file.
dropbox file :
https://www.dropbox.com/s/9i4dt262mmyfa ... .pigs?dl=0