Hi, Today, when I lunched artemis, it asked to download some update and I leted it updates automatically. Then, I tried running the already saved *.apj files saved before with the 32-bit system and, surprisingly, I have found them running normally and giving the same results as the old ones ... !!! Surely these updates are essential to run ifeffit properly under 64-bit systems. I suggest to integrate these updates in a newer version of ifeffit and make it available online as soon as possible. thanks Sameh Ibrahim Ahmed assistant professor of crystallography Ain-Shams University Egypt current institute XAFS beamline, ELETTRA Trieste, Italy.