pokapokapon: I did a clean install first after reading the following official FAQ
forums.taleworlds.com/index.php?threads/crash-checklist.431690/
To perform a Clean Install, Uninstall the game. You can do that by right-clicking the game on Steam Library and selecting Delete Local Content. Delete all folders related to the game that remains after the uninstallation.
The folders that might have files inside:
C:\Program Files (x86)\Steam\steamapps\common\Mount & Blade II Bannerlord
C:\Users\USERNAME\Documents\Mount and Blade II Bannerlord
C:\ProgramData\Mount and Blade II Bannerlord
In any case, I think we need to wait until the official response
I will try that, thanks.. Even if I find it a bit weird that doing a clean reinstall could solve anything, since I had no mods at any point, and the game never launched.
Are we even sure about an official response ? I saw in several posts that those kind of bugs were there for several years already