FLIRT out_file must exist.

[MarcRamos]

I have run flirt command several times and I don't receive that error:

Exception: Subnodes of node: apply_registration_roivs failed:
Subnode 0 failed
Error:
The 'out_file' trait of a FLIRTOutputSpec instance must be an existing file name, but a value of u'/media/nimbus/106_TOC/MRS_020512_P/tp1/NIPYPE/diffusion_pipeline/registration_stage/apply_registration_roivs/mapflow/_apply_registration_roivs0/atlas_registered_flirt.nii.gz' <type 'unicode'> was specified.

What has happened?
Thanks!

[MarcRamos]

I seem to have solved the issue installing the connectome mapper again.
I am doing custom parcellation and I saw that in some part of the diffusion code is checked if parkey in:

Open the corresponding ROI

    print("Open the corresponding ROI")
    for vol in roi_volumes:
        print 'VOLUME:',vol
        print 'PAR KEY:', parkey
        if parkey in vol:
            roi_fname = vol
            print 'FNAME:',roi_fname

That somehow troubled me so it would be better to say before hand that you hace to put the atlas name as the filename or take the name from the filename, because I was using something different.
Thanks!

[MarcRamos]

The original error appeared again when I put a new subject. I close the program, start again and the error is not there!