Ross, The Ifeffit mailing list is a superb resource for all your ifeffit+friends questions. http://cars9.uchicago.edu/mailman/listinfo/ifeffit/ Among the many nice things about the mailing list is that there are a number of people who, unlike me, use the Mac and will know the answer to your question. I have taken the liberty of forwarding this along to the mailing list. You should join the list so that when someone answers, you will get the mail. Good luck, B -----Original Message----- From: Ross Williams [mailto:Ross.Williams@curtin.edu.au] Sent: Mon 7/16/2007 9:47 AM To: Ravel, Bruce D. Subject: Problems with EXAFS Analysis software for MAC Hi I am having problems running ATHENA, ARTEMIS, and HEPHAESTUS, well actually an of the programs in the package. I have a new Intel MacBook with OS X version 10.4.10. I installed the X11 SDK from the OS X dvd, after I install it I could install your package. However when I open on of the programs (by opening them in Applications/Ifeffit) I am prompted to pick a output device, "X11 graphics" or "aquaterm". Either choice the program icon appears briefly in the dock then dissappears, this happens for all the programs. Any advice would be appreciated. Thanks, Ross +++++++++++++++++++++++++ Ross Williams Centre for Materials Research Curtin University of Technology GPO Box U1987 Perth WA 6845 Western Australia ross.williams@curtin.edu.au