External Email - Use Caution
After you install either R2017b or R2019b using the fs_install_mcr script you should end up with either ./freesurfer/MCRv9.3 or ./freesurfer/MCRv9.7 There are no soft links to create manually and there should be no references to MCRv8.4 in DYLD_LIBRARY_PATH or in the shell environment.