Friends, I found where I made my mistake in trying to convert data from PAF 2.31 to PAF 4.0. When it asked a name for the converted data file, I named it "PAF 4 Data" and it set up a file named that, but no data in it. When I went back and just used the same old "indiv2.dat" for the name, it set up that file WITH the data. Thanks to Bill for all his info trying to help me. Jackie Veen