Freeview quit unexpectedly

Did you follow the video guide? https://surfer.nmr.mgh.harvard.edu/fswiki/DownloadAndInstall?action=AttachFile&do=view&target=installFS_demo.mp4

If that doesn’t work, I’d recommend you just email the FreeSurfer tech support mailing list: FreeSurferSupport - Free Surfer Wiki

You can just add these lines to your appropriate profile/RC file, and they will be automatically re-executed upon opening terminal. I believe Macs are all using .zprofile these days.

Best,
Steven