Crash Dub

Cubase 10.5.30.365 64bit 2025.2.28 16.48.13.101
What´s does it mean? craching during startup session.

Hello,
This looks like the name of a crash dump to me. Where do you see it? Are you on windows? You could upload the crash dump here (or to a dropbox or other and post a link), and someone could analyze to see what has happened.
(Crash dumps are in your Documents\Steinberg\Crash Dumps folder).

If Cubase crashes during session load, it could be because of a plugin.