Multiple Crashes After 10.5 Pro upgrade

I’m on WIndows 10
Had a problem with Omnisphere being sent to the blacklist I sorted this by re-activating the correct dll. Now Cubase 10.5 will not start at all. It gets to the plugins and quits.

Error from event log:
Faulting application name: Cubase10.5.exe, version: 10.5.0.68, time stamp: 0x5da4e875
Faulting module name: dnssd.dll_unloaded, version: 3.0.0.10, time stamp: 0x4e5dcbf3
Exception code: 0xc0000005
Fault offset: 0x0000000000002170
Faulting process id: 0x1efc
Faulting application start time: 0x01d59ff19765bbff
Faulting application path: C:\Program Files\Steinberg\Cubase 10.5\Cubase10.5.exe
Faulting module path: dnssd.dll
Report Id: 176cc2b2-a26f-435a-88b3-1e218c7d4e04
Faulting package full name:
Faulting package-relative application ID:

I used the new ‘shift-ctrl-alt’ and launch and disabled loading of plugins and all is okay…although I now have no plugins lol. It seems Cubase 10.5 has an issue with Omnisphere 2.6. 10.0.5 is still fine and I’m using it for my critical work now.