Dreamweaver 2021 won’t launch anymore on my Mac user account
Dreamweaver 2021 won’t launch anymore, it always hangs on launch with ‘updating site cache’ message displaying, but the stop button is unresponsive. It’s always been fine previous to today.

I’m using Mac OS 10.15.1
iMac (Retina 5K, 27-inch, 2019)
3.7 GHz 6-Core Intel Core i5
32 GB 2667 MHz DDR4
No 3rd party antivirus software.
I have restarted Mac, multiple times.
I’ve uninstalled and reinstalled Dreamweaver 2021.
I've tried restoring prefs, using the instructions here:
https://helpx.adobe.com/dreamweaver/kb/restore-preferences-dreamweaver.html
(both manually and with the startup screen method).
All my other Adobe CC apps are running fine, computer is behaving normally and all non Adobe apps behaving normally.
On a second uninstall/reinstall it launched fine when I was logged out of CC and then when I logged into CC it was fine until I quit and relaunched and the problem came back again...
But when I try swiching to another user account on the Mac it opens fine.
Any suggestions would be amazing, thanks!
