Pc Version Loading Screen Stuck

I run the latest Steam version of the game 1.9.1

Hello, i need help because i am stucked.
I am at the Siege when the trabuchet is ready to fire. I can see the three cutscenes, the last one where they decide how to fight the incoming army from behind. Than the loading screen and it stucks there. The icon on the right keep turning but the red bar never fills up.

Any help?

p.s. i knoiw where savegames are but i have no idea how to upload it here since the .vhs is not autorized