Hi Andrade - You have some forward slashes ("/") at the ends of lines in the config file that should be backslashes ("") instead.

a.y ________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Renew Andrade andraderenew@yahoo.com Sent: Saturday, December 21, 2019 9:11 AM To: Freesurfer Support List freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] tracula error gradient vectors too many ('s

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Dear FreeSurfer experts: I am trying to run tracula in 4 subjects of a public dataset. I have encountered one error. I leave the output of terminal below. I also attach the configuration file. I hope you can follow from there. Sincerely, Andrade.

root@andraderenew:/usr/local/freesurfer/subjects# trac-all -prep -c /usr/local/freesurfer/subjects/dmrirc.IXI Too many ('s. INFO: SUBJECTS_DIR is /usr/local/freesurfer/subjects INFO: Diffusion root is /usr/local/freesurfer/subjects Actual FREESURFER_HOME /usr/local/freesurfer trac-preproc -c /usr/local/freesurfer/subjects/IXI_25_Guys_T1/scripts/dmrirc.local -log /usr/local/freesurfer/subjects/IXI_25_Guys_T1/scripts/trac-all.log -cmd /usr/local/freesurfer/subjects/IXI_25_Guys_T1/scripts/trac-all.cmd #------------------------------------- /usr/local/freesurfer/bin/trac-preproc #------------------------------------- #@# Image corrections sáb dic 21 15:06:13 CET 2019 mri_convert --bvec-voxel /media/andraderenew/backup/image_databases/IXI_dataset/guest-20191220_131017/25_Guys/DTI/NIfTI/IXI025-Guys-0852-DTI-00.nii.gz /usr/local/freesurfer/subjects/IXI_25_Guys_T1/dmri/dwi_orig.nii.gz mri_convert.bin --bvec-voxel /media/andraderenew/backup/image_databases/IXI_dataset/guest-20191220_131017/25_Guys/DTI/NIfTI/IXI025-Guys-0852-DTI-00.nii.gz /usr/local/freesurfer/subjects/IXI_25_Guys_T1/dmri/dwi_orig.nii.gz $Id: mri_convert.c,v 1.226 2016/02/26 16:15:24 mreuter Exp $ reading from /media/andraderenew/backup/image_databases/IXI_dataset/guest-20191220_131017/25_Guys/DTI/NIfTI/IXI025-Guys-0852-DTI-00.nii.gz... TR=0.00, TE=0.00, TI=0.00, flip angle=0.00 i_ras = (-0.998725, -0.0503472, 0.00377193) j_ras = (-0.0504772, 0.994141, -0.0955763) k_ras = (-0.00106217, 0.0956448, 0.995415) writing to /usr/local/freesurfer/subjects/IXI_25_Guys_T1/dmri/dwi_orig.nii.gz... ERROR: Must specify input table of gradient vectors Linux andraderenew 5.0.0-37-generic #40~18.04.1-Ubuntu SMP Thu Nov 14 12:06:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

trac-preproc exited with ERRORS at sáb dic 21 15:06:13 CET 2019