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