Hi all,

When I attempt to create a high-resolution head surface tessellation using mkheadsurf, I end up with the following errors:

For " mkheadsurf -subjid xxx" the error: cannot find volume T1 for xxx

or for

[root@localhost bem]# mkheadsurf -subjid xxx -srcvol T1-neuromag/slices
INFO: log file is /usr/local/freesurfer/subjects/xxx/scripts/mkheadsurf.log
--------------------------------
Wed May  6 01:03:46 EEST 2009
/usr/local/freesurfer/subjects/xxx/bem
mri_seghead --invol /usr/local/freesurfer/subjects/xxx/mri/T1-neuromag/slices --outvol /usr/local/freesurfer/subjects/xxx/mri/seghead --fill 255 --thresh1 20 --thresh2 20 --nhitsmin 2
--------------------------------
input volume:  /usr/local/freesurfer/subjects/xxx/mri/T1-neuromag/slices
output volume: /usr/local/freesurfer/subjects/xxx/mri/seghead
threshold1:    20
threshold2:    20
nhitsmin:      2
fill value:    255
Loading input volume
corRead(): can't open file /usr/local/freesurfer/subjects/xxx/mri/T1-neuromag/slices/COR-.info
ERROR: could not read /usr/local/freesurfer/subjects/xxx/mri/T1-neuromag/slices
ERROR: mri_seghead

Any advice on what could be wrong ?

Thanks in advance

shriks