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Dear All, I'm trying to do TBSS but I have a problem when I run "tbss_3_postreg -S". I have 215 subjects with identical acquisition parameters that were run through dtifit (that data all seems to be in good shape and has been used and examined pretty extensively). 'tbss_2_reg -T' had run successfully. So, I tried tbss_3_postreg -S. The tbss_3_postreg -S script applies the nonlinear transforms found in the previous stage to all subjects to bring them into MNI space. This seems to produce the 'stats' directory and files predicted: all_FA.nii.gz mean_FA.nii.gz mean_FA_mask.nii.gz mean_FA_skeleton.nii.gz In the 'FA' directory, there are a new image files for each subject: con_.*\_FA_FA_to_target.nii.gz (I've checked all of them , and they looked fine.) However, I checked the all_FA.nii.gz image in the 'stats' directory, some of the volumes display as black or the image is not in the middle (showed in attachment). So I don't know what to do or what is wrong. Would you please help me? Best Regards, Mirabella