[Ifeffit] SIXPack : How to load data file

Hi all, I am doing some data analysis of XANES as well as EXAFS data using data analysis software SIXPack. I am not able to load any data file. I used E and mu(E) data format file. Also I try to open E, I0, It data format file but still not able to open or plot any data. I also tried to open the example data given with the programm, but got the same result. I had gone through the SIXPack Documentation, but not able to get how to load a data file. If someone can please guide me, I will be very thankful. with regards Vijay Hinge School of Studies in Physics Vikram University, Ujjain (INDIA)