Young Student seeking Assistance in Identifying Error in Preprocessing steps

Hello friends,

I have been working with 206 resting-state images from http://adni.loni.usc.edu/data-samples/access-data/ . I have been going at this for approximately two weeks with relatively little success. Currently it appears I may be successfully completing slice-timing correction, and then having an error during the realignment stage of preprocessing, but honestly I am uncertain where my error resides.