Hi Ren_mem, I haven't been getting the error messages you have. :-/ Post back if you get that one pinpointed You can use both on a single object. However, in my experience in the shader editor, the shading domains on the right side in the Properties pull out tray override the domains on the actual shader tree itself. If you are creating a tree from scratch and creating your own leaf textures, the best method is to create a separate shader and select it through the properties tray domain selector. Using the a layer list in the actual shader tree has been allowed to make the editor backward compatible with earlier versions of Carrara. Using the Properties tray is preferred though. Mark