Based on my experience, Turns out the server closes the connection unexpectedly half way through the file. You need to make sure it downloads the whole thing Use the check sum -P -----Original Message----- From: FSL - FMRIB's Software Library [mailto:[log in to unmask]] On Behalf Of Luke Stoeckel Sent: Monday, August 17, 2009 12:31 PM To: [log in to unmask] Subject: [FSL] FSL failed install Mac OS X 10.5.7 After downloading FSL version 4.1 for the Mac from the website, an error was returned indicating the file had been corrupted when I ran fsl_installer.sh. I am reinstalling the file. Any other suggestions?