sorry this error was :

********FINAL ITERATIVE TEMPLATE DEFORMATION******** Compute Local values csf/gray Fine Segmentation...40 iterations mghRead: encountered error executing: 'zcat /usr/local/freesurfer/subjects/s2/mri/T1.mgz',frame -1, errno 12

mri_strip_skull: done peeling brain

Brain Size = 1657531 voxels, voxel volume = 1.000 mm3 = 1657531 mmm3 = 1657.531 cm3

mri_watershed Error: read failed

Linux qq-desktop 2.6.28-15-generic #51-Ubuntu SMP Mon Aug 31 13:33:16 UTC 2009 i686 GNU/Linux

recon-all exited with ERRORS at Wed Sep 9 15:08:15 CST 2009