Thanks mqvpeua.
EDIT: Some interesting developments… I found this post where they identified that not all files were removed during the uninstall process. I went into all the various locations and manually deleted folders/files (after taking backups of course) then did a reinstall and it worked!
So then I thought I’d re-paste my previously backed up “User Data” folder and try opening again - which didn’t work. Back to the original problem. So there’s something in my User Data folder that’s corrupted Brave from opening properly.
What can I do to safely re-import my bookmarks and other things that my user data folder contains?