reinstall Cubase but closes after selecting project

Hi
I reinstalled my OS Windows 10 on my HP Pavilion laptop (only 1 year old).
I reinstalled Cubase 10.5 full from downloads ( I had upgraded to Artist 10.5 from Artist 7 and it was working really well)
I have eLCC v 6.12.1.1267 and can see my USB licenses. I also run the maintenance.
USD Licenser shows in My Steinberg.

Cubase starts up, I select a project, almost gets there and then just closes itself.

Did I miss a re-registration? re-activation?

Hi,

Could you attach the crash dump file, please?

Win: Documents/Steinberg/Crash Dumps