Thank you so much for the answer. Unfortunately, I am trying to recover some old project which uses expressions, particles and camera raw presets and (I tested this) if I update the projects to newer AE versions something will always change, even if slightly. I need to be conservative in this project recovery.
Anyway, I could do this procedure on my old gaming laptop with Win10 where everything works, just wanted to cut render times using the new workstation.
So it really could be a Win11 compatibility issue?
Does somebody has some insight on that error code?
Thanks!