.exr texture can't be rendered (cycles)

Hi, I tried to put .exr texture as a bump texture, but in render viewport and after pressing f12 something like this appears:

Nodes are like this:

Value under multiply is high, otherwise a flat, blank surface is rendered.

I want to use exr instead of png because exr has more color info. When i use the same texture as png the bump is distorted mess.

In material viewport the exr is visible, so i think it’s not a flawed exr’s fault. Any ideas, please?

It’s solved already. The files’ path had native letters in it…