Hamish wrote: > so better to try and upgrade to GRASS 6.4.2. I've got some > .debs for Debian/Squeeze if you want them. here they are: http://download.osgeo.org/grass/grass64/binary/linux/debian/squeeze/ if you are running Ubuntu, try adding the UbuntuGIS ppa to your repository list and upgrading that way. See https://wiki.ubuntu.com/UbuntuGIS Hamish