Hi Stefano, are you using this link - ftp://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/dev/freesurfer-darwin-OSX-ElCapitan-dev.tar.gz ? You might have been trying to download the old OSX backup version that no longer exists (and has now been removed from the disk)

best,

Andrew

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of "stdp82@virgilio.it" <stdp82@virgilio.it>
Reply-To: FS Help <freesurfer@nmr.mgh.harvard.edu>
Date: Wednesday, September 12, 2018 at 3:03 PM
To: FS Help <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Problem to download dev version