Sorry, I did, and it totally works now, thank you, my mistake.
I do have a related question about the chess set (this may be a shot in the dark?) : How does Unreal know to use the standard surface shader in this chess set rather than the preview shaders that show up in the USD project settings? Whenever I try to bring my own assets in, it will use an automatically assigned preview shader from Houdini instead of the material X standard surface model …and when I bypass the auto-generation of the preview shader in Houdini , my stage shows a mtlx standard surface assigned to the asset similarly to the chess set, but I get basically empty materials inside of unreal when switching to the mtlx context.
To clarify the preview shaders only display textures in the unreal or universal render context despite being autogenerated from a material X shader in Houdini. Anyway, super confusing but if you have any recommendations about how to solve this or where to look for answers I would greatly appreciate it.