Ruoshuang, I think this is the solution: http://cars9.uchicago.edu/~ravel/software/doc/Athena/html/import/plugin.html#athena'spluginregistry Apparently, the use of the X10C file type plugin became disabled on your computer. Click on the button next to X10C and try again. If that doesn't solve everything, post again. B -- Bruce Ravel ----------------------------------- bravel@bnl.gov National Institute of Standards and Technology Synchrotron Methods Group at Brookhaven National Laboratory Building 535A Upton NY, 11973 My homepage: http://cars9.uchicago.edu/~ravel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/ -----Original Message----- From: ifeffit-bounces@millenia.cars.aps.anl.gov on behalf of Ruoshuang Huang Sent: Mon 11/10/2008 4:52 PM To: ifeffit@millenia.cars.aps.anl.gov Subject: [Ifeffit] problem on opening data file Hello All, Recently I found that I could not open my EXAFS data files using Athena any more. Previously I had no problem using Athena to do data analysis (the last time was in last year). Now when I try to open a data file, a small window appears saying this file 'could not be read by ifeffit as a data file'. This happened to both the old data files that could be opened previously and new ones that were obtained recently. All the raw data were taken on beamline X10C at NSLS in the format of .xfs. I appreciate it if someone could help and give me some suggestions. I've attached one of my data files as an example. Thank you so much, Ruoshuang