I had been using Athena for couple of months and had not problem. But recently, I cannot load any new data although I am still able to open project files (*.prj) previously created. Then this error message shows up at the bottom of the Athena window. I tried to reinstall Ifeffit and to install different version of Ifeffit but all failed. I saw a message posted couple of years ago on a similar problem in this email list but it seemed no answer for it.