I am getting an error message "unable to locate default data for command=40, type=0, keyword=" with keyword =859, =860 and =861 when trying to create a new polygon. Can anyone tell me what this error reflects? Missing or corrupt file? Program glitch? Is there any documentation available for error codes like these? I am trying to model a building roof that has a compound slope. The roof tilt azimuth is not square to the space azimuth so all of the exterior walls are polygons with a sloped top edges. I'm having to create these in detailed edit mode as I couldn't find a way to do this in the wizard mode. Any help with the program error or a better way to input this geometry would be appreciated.

Rick Routh