I get these pincher errors as well in VirtualBox.

One thing that may fix it is to disable 3D acceleration for the graphics in the VM settings.

From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Michael ONeill
Sent: Thursday, 23 March 2017 11:56 PM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] Petsc Error in Freesurfer v6.0

Hello Freesurfer Developers,

I've just installed Freesurfer v6.0 and attempted to run the commands printed below in order to test the installation:

freeview -v \

    bert/mri/T1.mgz \

    bert/mri/wm.mgz \

    bert/mri/brainmask.mgz \

    bert/mri/aseg.mgz:colormap=lut:opacity=0.2 \

    -f \

    bert/surf/lh.white:edgecolor=blue \

    bert/surf/lh.pial:edgecolor=red \

    bert/surf/rh.white:edgecolor=blue \

    bert/surf/rh.pial:edgecolor=red

Running this resulted in the a PETSC error which i have attached in .txt file.
I'm running Ubuntu 16.04 64bit in virtual box on a windows host.
I've tried numerous solutions including using the latest dev build of freesurfer v6.0 (as of 23/03/2017), installing the latest version of PETSC and doubling the amount of RAM available to the guest OS from 12GB to 24GB. 
But unfortunately none of these approaches worked and the issue still persists.

I'm very eager to start using Freesurfer v6.0 and this seems to, hopefully, be the last rock in the road.
Any help you could offer would be appreciated.

Kind Regards,

Michael

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