Fixed in CVS (both 6.1 and 6.0.1) Markus -- Markus Neteler <neteler itc it> http://mpa.itc.it ITC-irst - Centro per la Ricerca Scientifica e Tecnologica MPBA - Predictive Models for Biol. & Environ. Data Analysis Via Sommarive, 18 - 38050 Povo (Trento), Italy