Hi list members, I am attempting to install ifeffit on mac book running Lion (10.7.4). I have downloaded and installed xcode and gfortran. I downloaded the iffeffit package from github. I then cd into .../Downloads/newville-ifeffit-30644e and run sudo ./PGPLOT_install I get the following error: = = = = = = = = = = = = = = = = = = = = = = = = = = = PGPLOT installation script = system = linux == linux g77_gcc prefix = /usr/local/ = Looking for PGPLOT file: pgplot5.2.tar.gz = PGPLOT file not found = I'll try to download it for you... trying with regular old ftp you may have to hit return here for this to work -- Really, you won't need to enter 'anonymous' or a valid username --- just hit return ftp: Can't connect to `131.215.193.54': Connection refused ftp: Can't connect to `ftp.astro.caltech.edu' ./PGPLOT_install: line 176: 1407 Segmentation fault: 11 $ftp $pgp_ftpsite <http://mingus.as.arizona.edu/~bjw/software/pgplot_fix.html However, the iffefit INSTALL file says pgplot must be installed with the PGPLOT_install command, which these directions do not use. Furthermore, since iXAFS runs on Lion, it seems to me that someone may have already found a solution to this problem. So rather than trying more random solutions, I thought it might be pertinent to check with the list so see if that is the case. If anyone can provide any suggestions or a known solution to this problem, I would appreciate it. Thanks, George