Attached are two screenshots of the filled.mgz view and the lh.orig.nofix view. The cerebellum doesn't seem to be the problem, and both hemispheres are distinguished. Additionally, the brainmask does not show this defect. All of the brain is included in the brainmask.

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Sent: Tuesday, December 3, 2019 11:57 AM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] topological defect error

it might also be the hemispheres not being separated, hard to tell
(although that almost never happens). You can look at the filled.mgz to
check this (the hemis should have different labels)
On Tue, 3 Dec 2019,
Greve, Douglas N.,Ph.D. wrote:

> Look at the lh.orig.nofix and see if you can find the defect. Also, look at it in the volume and the
> surface views. Might be cerebellum
>
> On 12/3/2019 11:30 AM, Laurel Quinlan wrote:
>
> External Email - Use Caution
>
> Hi Freesurfer Support,
>
> One of my colleagues receives the following error after running a recon:
>
> exited with errors: "excessive topologic defect encountered: could not allocate 289309485 edges
> for retessellation"
>
> I checked the inflated view and there does appear to be significant portions of the brain missing
> (however I cannot see this in 2D). I've attached a screenshot of the inflated view.
>
> How would I go about fixing the error?
>
> Thank you!
>
> Laurel Quinlan
> Associate Research Specialist
> Center for Healthy Minds
> University of Wisconsin-Madison
>
>
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>