Hi Marissa – Those things are not all required simultaneously. You should either specify a single file (if it’s the same for all scans you’re processing) or a list of files, but not both at the same time.

As far as errors go, there’s no way of guessing what’s going on without seeing the error. Please send the trac-all.log file and your config file if you want help troubleshooting. Thanks!

a.y

From: <freesurfer-bounces@nmr.mgh.harvard.edumailto:freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Marissa Pifer <marissapifer@gmail.commailto:marissapifer@gmail.com> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu> Date: Thursday, June 15, 2017 at 12:20 PM To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edumailto:freesurfer@nmr.mgh.harvard.edu> Subject: [Freesurfer] bvals and bvecs for tracula v6

Hi freesurfers,

I recently updated my freesurfer version from 5.3 to 6, and I'm running into a problem with the tracula dmrirc.example file. In the dmrirc.example file for v5.3, it required just the bvals and bvecs in a text file in the correct format. For v6, it now requires a bval files, bval list, bvec file and bvec list. Could you give me an example of what the bval list and bvec list would look like? I'm not sure what the difference is, and I've tried a few different things but cannot get tracula to run correctly due to there being an error with these inputs.

Marissa