Installed UE 5.5, but couldn’t get ImpostorBaker to work.
Some blueprint functions are not working. Found that enabling GeometryScript plugin for my project fixes the errors insideBP_Generate_ImpostorSprites.
But even still the function CreateMaterialInstanceFromBaseMaterial is missing inside EUW_Impostor_Editor and I have no clue in which Plugin it is found. Probably some kind of non-engine plugin, cause I couldn’t find it in C++.