REHO images empty

Dear REST experts,
i have performed the preprocessing of my rest fMRI data followed by the ReHo processing. after running the analysis, i have the rest ReHo*.* image, but this image is empty, can anyone suggest me where could i have made mistake (preprocessed image - smmothed image is looking fine)


Might be some problem with you preprocessing.

thanks you Sir for the reply,
I have verified every steps (realign, corregistration, normalisation, smoothening) by doing it 3 times, i could not  find any problems in the preprocessing, but to make myself sure can you pl. let me know which step of preprocessing could possibly have gone wrong,
thanks in advance

Please paste snapshots of DPARSF setting, preprocessing image, and ReHo image here .