I had a similar error when using CentOS on VirtualBox. The error came from
an error in the OpenCL driver.
Are you running a virtualmachine?
If not i would advise trying a different graphics driver.
As to the CentOS/Ubuntu choice. I would go with CentOS as it seems more
stable/constant and is more easy to also install FSL.

Best regards
Rune Frandsen
MD Danish Center for Sleep Medicine.


On Wed, Aug 28, 2013 at 5:18 PM, Z K <zkauf...@nmr.mgh.harvard.edu> wrote:

> JoJo,
>
> I have not tried to recreate your issues on machine running Ubuntu 13.04
> but have tried to run the commands on Ubuntu 12.04. To summarize:
>
> 1) Regarding your first issue... this is standard output to the terminal
> on certain OS's including Ubuntu. I got it when I tested your command
> but the tkmedit window still appeared. You may have to press enter after
> receiving the "Couldn't create output file .xdebug_tkmeditReading
> /usr/local/freesurfer/tktools/tkm_common.tcl" but this is a normal
> warning message.
>
> 2) Change your command to the following:
> tkmedit -segmentation $SUBJECTS_DIR/bert/mri/aseg.mgz \
>   $FREESURFER_HOME/FreeSurferColorLUT.txt bert norm.mgz
>
> 3) Again, I get the same warning, but the window still appears. Try
> hitting enter after you get the warning message.
>
> -Zeke
>
>
> On 08/23/2013 11:05 PM, JoJo wrote:
> > Dear Freesurfer experts,
> > I installed FS Centos4-64(and also tried Centos6) on Ubuntu 13.04. I
> > followed the commands in tutorial and got error message, listed as
> > follows. (Nevertheless, FS can read in volume and surface from GUI.)
> > Another question is, which one of Centos4 or Centos6 is more
> > suitable for Ubuntu 13.04?
> > 1. tkmedit bert orig.mgz
> > Couldn't create output file .xdebug_tkmeditReading
> > /usr/local/freesurfer/tktools/tkm_common.tcl
> > 2. tkmedit -segmentation mri/aseg.mgz \
> >   $FREESURFER_HOME/FreeSurferColorLUT.txt bert norm.mgz
> > Couldn't create output file
> >
> .xdebug_tkmeditmghRead(/usr/local/freesurfer/subjects/bert/mri/mri/aseg.mgz,
> > -1): could not open file
> > a window pop up: Error: loading segmentation mri/aseg.mgz
> > Couldn't import the segmentation volume. Tkmedit couldn't read the
> > segmentation specified. This could be because the segmentation volume
> > wasn't a valid COR volume directory.
> > (Note: In fact, I can load segmentation volume from window.)
> > 3. tksurfer bert rh pial
> > Couldn't create output file .xdebug_tksurfersubject is bert
> >
> > Thanks for your help, JoJo
> >
> >
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> >
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-- 
Rune Frandsen
runefrand...@gmail.com
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