Hm, realy strange.
What i have seen, there is nothing different to the demo version. The values which are set in the Octane nodes, are in both versions the same.
In any debug version, i can save the scene to open it in the Octane standalone to see changes. And again, both render results look the same.
It can only have something to do with the image output, but there is no different in the code between the demo and the full version.
The gamma is the same, all calculation values are the same but after all, it looks different. Also the image values i become from the render engine are to bright.
I think only a single value which isn´t set will make the difference.
But i will find it