Dear FreeSurfers,

To get a better view on the pial surface of the Heschl' Gyri I used the
command mri_vol2surf after having created the suitable volume with
label2vol. My goal is to get the pial surface of this single label.

My Command is:  *mri_vol2surf --src pf_lh_vol.mgz --hemi lh --surf pial --srcreg
register.dat --out_type paint --o A1surf-lh.w*

The output file was created without any error, but loading the file in
freeview or tksurfer an error occured:

*command: tksurfer WH lh A1surf-lh.w                                              
*subject is WH*
*hemi    is lh*
*surface is A1surf-lh.w*
*surfer: current subjects dir:
/Volumes/Macintosh/Freesurfer/Kontrollen/A1_Wilts_Heide*
*surfer: not in "scripts" dir ==> using cwd for session root*
*surfer: session root data dir ($session) set to:*
*surfer:     /freesurfer/Kontrollen/A1_Wilts_Heide*
*checking for nofix files in 'A1surf-lh.w'*
*Reading image info
(/Volumes/Macintosh/Freesurfer/Kontrollen/A1_Wilts_Heide/WH)*
*Reading
/Volumes/Macintosh/Freesurfer/Kontrollen/A1_Wilts_Heide/WH/mri/orig.mgz*
*surfer: Reading header info from
/Volumes/Macintosh/Freesurfer/Kontrollen/A1_Wilts_Heide/WH/mri/orig.mgz*
*ERROR: MRISread: file
'/Volumes/Macintosh/Freesurfer/Kontrollen/A1_Wilts_Heide/WH/surf/lh.A1surf-lh.w'
has 0 vertices!*
*Probably trying to use a scalar data file as a surface!*

What am I doing wrong?

Any help would be greatly appreciated. Thanks in advance

Holger