Hi, I also see Stefano's problem trying to import an Atoms.inp into artemis on Mac OSX. I think it occurs at the ## make a project feff folder unless ($just_parse) { } block in sub import_atoms{}. In fact, I get a malloc 'out of memory error': *** malloc: vm_allocate(size=2147483648) failed (error code=3) *** malloc[1056]: error: Can't allocate region Out of memory! somewhere in this block. I get a print statement after the Ifeffit::Path->new(), and it seemed to die at the line (@autoparams = autoparams_define($id, $n_feff, 0)) if $config{autoparams}{do_autoparams}; which seemed odd. I haven't pursued it any more than that. Running darwin's top, I do not see a noticeable change in memory usage on trying to import the Atoms.inp useful. On my laptop, one run said there was 175M free before running artemis, and 140M after starting artemis, but before opening an Atoms.inp file. A second attempt (stopping some processes, restarting X11), had 240M free before running artemis, 200M after running artemis, and the same crash on opening an Atoms.inp file. I definitely don't see this problem on linux, even on machines with much less actual memory. So I think it's not actual memory usage. That leads me to suspect perl/Tk. Any ideas, Bruce? Paul? --Matt