you need to update content manager. go to settings/content manager/general and select testing access: update to non-tested versions. you could also directly download it here: https://github.com/gro-ove/actools/releases/latest/download/Content.Manager.zipLooking for some help with Content Manger and Shaders patch.
I am trying to install 177.1, but get this error message, also get this in 1.76 as well but not 1.75?View attachment 1104031

