I recently installed 1. PGPLOT 5 (ver: 5.2.2-15) through Synaptic Package Manager from ubuntu - MOTU-Developers (Mathematics, Multiverse) 2. IFEFFIT from Carlo Segre < segre@debian.org>, (version 2:1.2.11d-6~lucid0 ) and 3. Horae-07-1 through Synaptic Package Manager from ubuntu - developers (Science, Multiverse) I am not able to run the demo programs. So I started running demo programs for PGPLOT first. My examples are in directory: /usr/share/doc/pgplot5/examples/pgdemo2.f.gz When I compile the program "depgplot10.f" and executed the file, the interaction on the console is attached in the file attached herewith. I need help in this regard and I am very very new to "xafs" as well as ubuntu. Wishing you best of life and time, With regards Rajesh Kumar