It's hard for me to know if that is a good test. You might have had the brick texture applied to the preview, for instance. This would be a good test: Open Poser -- delete all objects and figures -- go Edit/General Preferences/Set Preferred State -- Quit and relaunch Poser -- go to Render/Materials and click on the Textures popup. I predict the Ground Default Texture will be there 'cause you can't delete the Ground. Then load an untextured object or figure, apply [stucco] and Save, Quit, relaunch, etc.