All I did personally was to accept the suggested update. It wouldn’t reopen after that. Ran as admin, just in case and nothing. Un/Reinstalled, including removing traces and same problem with a clean install. Removed all again and reinstalled the older version and it opened again. So it’s not the save files, nor did removing all but the regular Windows fonts work by the way and I’ve just checked and don’t appear to have Gungsuh at all. I ran virus/malware scans, nothing found. No issues that I’ve noticed with anything else. I’ve also tried three or four times to install the update again, - most recently last week - in case the download had been corrupted with no change.