Dreamweaver 21.3 won't update, but 21.2 won't open either (Mac)

Literally overnight, seemingly as if the software tried to update itself, and move from 21.2 to 21.3, it seemed to "fail" with error code 116 at some point (while the software was open -- not sure if that matters).  But it stopped working, and would no longer save or upload.  I tried to repair or manually update, but I was running into the same error, even with my firewall (now) turned off.

The log shows this:

Exit Code: 116

------- Summary ------- -

3 fatal error(s), 0 error(s), 6 warnings(s)

FATAL: Fatal Error '116' occurred while download

FATAL: Fatal Error '116' occurred while download

FATAL: Error occurred in download of package (Name: AdobeDreamweaver21_x64-mul_stripped Version: 21.3.0.15593).

Error code: '116'

[Remaining report redacted by moderator to save space.]

...but that folder "/Users/(USERNAME HERE)/Library/Application Support/Adobe/Dreamweaver 2021/" DOES NOT EXIST!!!  It's as if it was ALREADY DELETED!!  Like the program was MOVED already (or something) and it cannot be found, because the new program's location cannot be found!  (???)

But the CC software will NOT simply offer to create a NEW installation of it for me!  So now I can't install it again OR upgrade the existing installation!!  Help!!  Anyone know what's going on??