Hi list,<div><br></div><div>I'm running&nbsp;trac-all -prep -c</div><div><br></div><div>but I have this error</div><div><br></div><div><div>dtifit -k /Applications/freesurfer/subjects/subject_prova/Diff01/dmri/dwi.nii.gz -m /Applications/freesurfer/subjects/subject_prova/Diff01/dlabel/diff/lowb_brain_mask.nii.gz -r /Applications/freesurfer/subjects/subject_prova/Diff01/dmri/bvecs -b /Applications/freesurfer/subjects/subject_prova/Diff01/dmri/bvals -o /Applications/freesurfer/subjects/subject_prova/Diff01/dmri/dtifit</div><div>Error: bvecs and bvals don't have the same number of entries</div></div><div><br></div><div>I'm noting that my original bvecs are</div><div><br></div><div><div>0 &nbsp;-0.460 &nbsp;-0.539 &nbsp; 0.490 &nbsp;-0.071 &nbsp; 0.226 &nbsp; 0.463 &nbsp; 0.483 &nbsp;-0.643 &nbsp; 0.468 &nbsp;-0.730 &nbsp;-0.707 &nbsp;-0.318 &nbsp; 0.175 &nbsp; 0.488 &nbsp; 0.460</div><div>0 &nbsp;-0.395 &nbsp;-0.588 &nbsp;-0.706 &nbsp;-0.605 &nbsp;-0.607 &nbsp;-0.236 &nbsp;-0.180 &nbsp;-0.464 &nbsp;-0.562 &nbsp;-0.337 &nbsp;-0.699 &nbsp;-0.786 &nbsp;-0.786 &nbsp;-0.712 &nbsp;-0.301</div><div>0 &nbsp;-0.795 &nbsp; 0.419 &nbsp;-0.057 &nbsp;-0.793 &nbsp;-0.725 &nbsp;-0.708 &nbsp;-0.695 &nbsp;-0.609 &nbsp; 0.333 &nbsp; 0.413 &nbsp;-0.108 &nbsp; 0.368 &nbsp; 0.392 &nbsp;-0.004 &nbsp; 0.476</div></div><div><br></div><div>and in dmri&nbsp;</div><div><br></div><div>0</div><div>0</div><div>0</div><div><br></div><div>bvals conversion is ok. What's happen? Why are there an error about conversion to FSL format?</div><div><br></div><div>Thank you very much, I really appreciate your patience.</div><div><br></div><div>Stefano</div><div><br></div>