Hi, in future first, please, check GRASS bugtracker, as this bug was reported [1] and is already fixed in CVS [2]. WBR, Maris. 1. http://wald.intevation.org/tracker/index.php?func=detail&aid=479&group_id=21&atid=204 2. http://freegis.org/cgi-bin/viewcvs.cgi/grass6/gui/tcltk/gis.m/gmtree.tcl.diff?r1=1.25&r2=1.26