That means it could not find any CSF voxels. Try checking the registration. It could also be that this is a subject with really small ventricles.

On 10/30/15 3:57 AM, stdp82@virgilio.it wrote:

Hi list,

During fcseed-sess -s subj -cfg vcsf.config

a subject produces the follow error.

I have rerun recon-all, cheched aparc+aseg with tkmedit. They seem to be ok.

Why this error is produced?

Thanks

Stefano

Creating output directory /Applications/freesurfer/subjects/fMRI/subj/rest/001/tmp.fcseed-sess.39124/glm

Loading y from /Applications/freesurfer/subjects/fMRI/subj/rest/001/fmcpr.nii.gz

Saving design matrix to /Applications/freesurfer/subjects/fMRI/subj/rest/001/tmp.fcseed-sess.39124/glm/Xg.dat

Normalized matrix condition is 61.5872

Matrix condition is 1e+08

Pruning voxels by thr: 0.000000

Found 0 voxels in mask

Saving mask to /Applications/freesurfer/subjects/fMRI/subj/rest/001/tmp.fcseed-sess.39124/glm/mask.mgh

search space = 0.000000

DOF = 297

Starting fit and test

Fit completed in 0.0008 minutes

Computing temporal AR1

Writing results

Computing FSNR

mean

maxvox sig=0  F=0  at  index 0 0 0 seed=1446518089

linear

maxvox sig=0  F=0  at  index 0 0 0 seed=1446518089

quad

maxvox sig=0  F=0  at  index 0 0 0 seed=1446518089

Computing PCA (300)

ERROR: no voxels in mask

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