Hi Julia, I have also encountered the same problem while analysing the data from SSRL. I can suggest you what I tried and got my data read by Athena. Go to the Setting pannel of the Athena window and then click on Plugin Registry. You will see all types of data format there, then you can check your data format there. Then, you can import your data. Abhijeet Gaur Research Scholar School of Studies in Physics Vikram University Ujjain, India Hello Everyone, I have a question about using Athena to analyze data taken at SSRL beam line 11-2. I can't seem to open the files, a message pops up saying it 'could not be read by ifeffit as a data file'. I have looked around these message threads and in the athena users guide but there doesn't seem to be any information on it. The users guide goes through choosing different data columns and if there is a header or not, but I can't open the data as some sort of text file to see how it is organized. I'm sure its just importing it differently or checking a box or something silly like that, but I would appreciate any guidance. Thank you very much, Lia