Windows 11 ; 20b1 will no longer start

Ok, after the last patch Tuesday Resolve will no longer start; I decided that rather than trying to fix it i would uninstall and reinstall the latest 19 Studio version. Sadly, it would no longer install either.

Suggestions on next steps?

Patch?

If you have Topaz Video AI installed the OFX causes issues with Davinci Resolve 20 b1.

Either uninstall TVAI or install TVAI without the OFX plugins. This might help, if and only if TVAI is installed.

Ok, after the last patch Tuesday Resolve will no longer start; I decided that rather than trying to fix it i would uninstall and reinstall the latest 19 Studio version. Sadly, it would no longer install either.

Suggestions on next steps?

I turns out the issue was the Topaz Video AI plugins, after removing them from C:\Program Files\Blackmagic Design\DaVinci Resolve\Plugins the issues is fixed