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@moon.cecer.army.mil)