There is a new version of mapgen available under grass/incoming on moon.cecer.army.mil. It is a compressed tar file called mapgen.tar.Z. The version which went out with the 4.1 release (unknown to us at the time) was not finished. What is now available is a version which has been upgraded to work with 4.1. Russ (grass-lists-owner at moon.cecer.army.mil)