[Freesurfer] Setting up Freeview on Ubuntu Linux 18.04: freeview can't find libpng12

External Email - Use Caution HI, I'm setting up freeview on a Linux 18.04 system and running through the instructions in https://surfer.nmr.mgh.harvard.edu/fswiki/DownloadAndInstall I got through to Example 4: "View the output volumes..." and got the error below.

[Freesurfer] Registration error

External Email - Use Caution Hi, I'm trying to learn to use Freesurfer to see if I can use it for some academic work on TBI. I downloaded it to a spare laptop at home, and filled out the registration form, and I got a message that stated "Registration Error: Spammer. Go