LUT created in photoshop does not work

Can anyone answer my question?

1. I've exported a frame as TIFF from the video in Premiere Pro CC

2. Opened the frame in Photoshop

3. Color-graded that frame by adding a bunch of curve adjustment layers.

4. Exported these corrections as 3Dlut with max precision (256, if I remember it correctly)

5. Set this LUT to the adjustment layer in Premiere.

Premiere immediately turned the picture to black.

I've figured out that the LUT file is incorrect.

If I do the same using value 64 for LUT, then it works.

What is wrong?