Hi all I've just installed the lates version of GSAS for linux. I followed the instuctions given by Bob and it seemed to install without any difficulties, however every time I want to put in an atom the program crashes and gives me the following message: Give atom editing command (<?>,$,I,S,X) >i n Enter TYPE, X, Y, Z, FRAC or <?> for help >ni 0 0 0 1 open: No such file or directory apparent state: unit 12 named /home/joost/gsas=/data/atmdata.dat lately writing sequential formatted external IO Abort (core dumped) I put the following in my .bashrc file: alias gsas=/home/joost/gsas/gsas I am not a great expernt on linux and I was wondering if anybody has had a similar problem or knows how to fix this. Thanks Joost Dr. J. van Duijn Department of Physics and Astronomy McMaster University Hamilton, ON Canada L8S 4M1 ____________________________________________________________ Do You Yahoo!? Get your free @yahoo.co.uk address at http://mail.yahoo.co.uk or your free @yahoo.ie address at http://mail.yahoo.ie