Hi, Working with FSL is new for me and I have a problem, and can't figure out what the problem is. I'm trying to run tbss for my research. But step 2 isn't working. This is probably why I get errors in step 3 and 4. I think my script is correct. I looked at my .tbsslog and it look corrects too. I'm working in fsl/5.0.2.2 and tried to run tbss only with one terminal open. Does somebody know what the problem might be? This is what I get in my terminal (I have more participants, but then it would be to long to copy here): Running TBSS_1 processing {PAT_004}_dtifit_FA processing {PAT_020}_dtifit_FA Now running "slicesdir" to generate report of all input images running TBSS_2 {PAT_004}_dtifit_FA_FA_to_target {PAT_020}_dtifit_FA_FA_to_target 3137731 running TBSS_3 using pre-chosen target for registration transforming all FA images into MNI152 space ERROR:: cannot find the following warp results: {PAT_004}_dtifit_FA_FA_to_target_warp {PAT_020}_dtifit_FA_FA_to_target_warp Please wait for registration (fnirt) to finish or re-run registrations running TBSS_4 creating skeleton mask using threshold 0.2 Cannot open volume mean_FA_skeleton for reading! creating skeleton distancemap (for use in projection search) Cannot open volume mean_FA_mask for reading! Image Exception : #22 :: ERROR: Could not open image mean_FA_skeleton_mask_dst terminate called after throwing an instance of 'RBD_COMMON::BaseException' /cm/shared/apps/fsl/5.0.2.2/bin/tbss_4_prestats: line 96: 20075 Aborted (core dumped) ${FSLDIR}/bin/distancemap -i mean_FA_skeleton_mask_dst -o mean_FA_skeleton_mask_dst projecting all FA data onto skeleton Image Exception : #22 :: ERROR: Could not open image mean_FA terminate called after throwing an instance of 'RBD_COMMON::BaseException' /cm/shared/apps/fsl/5.0.2.2/bin/tbss_4_prestats: line 99: 20076 Aborted (core dumped) ${FSLDIR}/bin/tbss_skeleton -i mean_FA -p $thresh mean_FA_skeleton_mask_dst ${FSLDIR}/data/standard/LowerCingulum_1mm all_FA all_FA_skeletonised Thanks in advance! Kind regards, Leontine