Cubase 'safe mode' on open. Terminated Unexpectedly

I’ve searched forum but struggling to find info on this. Maybe missing an obvious key word. Any pointers.
Cubase appears to close with no errors at the end of a session. Although if I choose ‘close’ the project, if no other projects are open then it closes all of Cubase as well, but NO ERROR messages.
“Quit” also closes project and Cubase with no errors.
But every time I OPEN Cubase I get the “safe mode” prompt.
Choosing “use current preferences” seems to continue to load and all works fine. But this prompt continues every time I restart.
No matter which options I choose and reset.
I’ve even ran cubase.exe in admin mode and this changes nothing. Any thoughts.
The only plugins in use are those that come with Cubase 10.5pro. No extras installed.
W10, 10.5pro


That means, Cubase didn’t quit properly last time. Probably a “silent crash”. Do you have any *.dmp file available?

Win: Documents/Steinberg/Crash Dumps

Mine is doing the same thing. No dmp file created this time


If you get this message, the DMP file has to be created and mentioned in the message. Could you attach a screenshot of the message, please?