Try doing it in matlab, so
a = MRIread('orig.mgz');
MRIwrite(a,'orig.mgz');

doug

Arno Klein wrote:
>
> dear doug,
>
> i am using FS v5.1 now but ran the 20 oasis subjects through FS v5.0. 
>  i am only having this trouble for one of the subjects.
>
> after the mri_convert workaround i am still getting the same memory 
> allocation error.  
>
> cheers,
> @rno
>
>
>
> On Fri, Jan 20, 2012 at 4:23 PM, Douglas N Greve 
> <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote:
>
>     This is a strange problem we've been having with some mgz files
>     that were generated during a short period of time last summer when
>     there was a bug in the mgz writing code. What version of FS are
>     you using? In the current dev version, this should not be a
>     problem. A work-around is to convert the orig.mgz to itself using
>     mri_convert in the dev environment, ie,
>
>     mri_convert orig.mgz orig.mgz
>
>     doug
>
>     Arno Klein wrote:
>
>
>         i get the following memory allocation error for only one out
>         of 20 oasis subjects that i processed with freesurfer 5.1 on
>         an ubuntu 11.10 machine with 24gb memory:
>
>         mris_register -curv subjects/OAS1_0061_MR1/surf/lh.sphere
>         templates_freesurfer/lh.KKI_2.tif
>         subjects/OAS1_0061_MR1/surf/lh.sphere_to_KKItemplate.reg
>         using smoothwm curvature for final alignment
>         $Id: mris_register.c,v 1.59 2011/03/02 00:04:33 nicks Exp $
>          $Id: mrisurf.c,v 1.693.2.2 2011/04/27 19:21:05 nicks Exp $
>         reading surface from subjects/OAS1_0061_MR1/surf/lh.sphere...
>         TAGskip: tag=1717658469, failed to calloc 1868656640 bytes!
>         Cannot allocate memory
>
>         system information:
>
>         FREESURFER_HOME: /usr/local/freesurfer
>         Build stamp: freesurfer-Linux-centos4_x86_64-stable-pub-v5.1.0
>         Debian version: wheezy/sid
>         Kernel info: Linux 3.0.0-14-generic x86_64
>
>         cheers,
>         @rno
>
>         
> ------------------------------------------------------------------------
>
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>
>     -- 
>     Douglas N. Greve, Ph.D.
>     MGH-NMR Center
>     gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
>     Phone Number: 617-724-2358 <tel:617-724-2358> Fax: 617-726-7422
>     <tel:617-726-7422>
>
>     Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>     <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting>
>     FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html
>     <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html>
>
>
>
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-- 
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
Phone Number: 617-724-2358 
Fax: 617-726-7422

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html

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