[Mne_analysis] mne_do_forward_solution Desired tag (unknown [3600]) not found Forward computation failed (see above)

[Matti Hamalainen]

Hi David,

The error message you get is fake. This does not directly relate to what happened. 

Is 

Read 2 source spaces a total of 20484 active source locations

indeed, the last log line before the error message? Can you send 

>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/mri/T1-neuromag/sets/COR-neuromag_101013.fif

to me. Next after the source space setup mne_forward_solution should read the MRI/MEG transform from this file but I cannot see how this could fail without producing the correct error message.

- Matti



On Feb 22, 2014, at 8:19 AM, Alexandre Gramfort <alexandre.gramfort at telecom-paristech.fr> wrote:

> hi David,
> 
> are you sure it's the same command line you type all the time?
> 
> is there a chance the measurement info changed between acquisitions?
> 
> btw I recommend you name your evoked data finishing with -ave.fif
> Consistency in fif files naming really helps.
> 
> Alex
> 
> 
> On Fri, Feb 21, 2014 at 10:47 PM, David I Leitman
> <leitman at mail.med.upenn.edu> wrote:
>> Hi all,
>> 
>> I was curious why I might be getting this error.... for most of my files
>> this command works problem free?
>> 
>> -thanks Dave
>> 
>> Running Command Number mne_do_forward_solution    --subject $SUBJECT
>> --src $SUBJECT-ico-5-src.fif    --bem $SUBJECT-5120-5120-5120-bem-sol.fif
>> --meas $file    --eegonly    --fwd
>> ${SUBJECT}_AR_noBC-epoched-${SUBJECT}-5-eeg-src-fwd.fif    --overwrite
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/meg/L16962_AR_noBC-epoched.fif
>> 
>> mne_forward_solution version 2.10 compiled at Sep  4 2013 04:24:23
>> 
>> Source space                 :
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/bem/L16962-ico-5-src.fif
>> MRI -> head transform source :
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/mri/T1-neuromag/sets/COR-neuromag_101013.fif
>> Measurement data             :
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/meg/L16962_AR_noBC-epoched.fif
>> BEM model                    :
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/bem/L16962-5120-5120-5120-bem.fif
>> Accurate field computations
>> Do computations in head coordinates.
>> Free source orientations
>> Destination for the solution :
>> L16962_AR_noBC-epoched-L16962-5-eeg-src-fwd.fif
>> 
>> Reading
>> /mnt/thothdisk1/K_AWARD/K_DATA/MEG_DATA/L16962/bem/L16962-ico-5-src.fif...
>> Read 2 source spaces a total of 20484 active source locations
>> 
>> Desired tag (unknown [3600]) not found
>> Forward computation failed (see above)
>> David I. Leitman PhD
>> 
>> Research Assistant Professor
>> Department of Psychiatry-
>> Neuropsychiatry program
>> Perelman School of Medicine
>> University of Pennsylvania
>> Gates Pavilion 10th floor room 1042
>> 3400 Spruce St
>> Philadelphia, PA 19104-4283
>> P: (215) 662-7389
>> F: (215) 662-7903
>> E: leitman at mail.med.upenn.edu
>> Faculty page: http://www.med.upenn.edu/apps/faculty/index.php/g275/p8174343
>> Lab website:
>> http://davidileitman.com
>> 
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---------

Matti Hamalainen, Ph.D.
Athinoula A. Martinos Center for Biomedical Imaging
Massachusetts General Hospital

msh at nmr.mgh.harvard.edu
mhamalainen at partners.org