I have no idea how, but it is suddenly working and it works just fine.
Except I don't the depth of field really works and when I play in 3rd-person view, in daylit outdoors, the game flickers and the contrast is inconsistent.

I don't know what to tell you, I followed the instructions, I turned on HDR in the game, my NVIDIA GPU settings are set to either 'off' or 'application-controlled'. I don't run any other shaders or graphic-enhancement mods. I could post here my mod load-order for Oblivion but I doubt that would help...

@itgfreak glad to know I'm not the only one.

Hello, I installed the wrapper version of 181 and I get a blank screen unless I turn of the global effect in the editor.
I would be grateful for a solution.