Hi, I'm starting to ask myself what is wrong with this particular system; first the gretl crash (opening the Stata file, see yesterday's thread), and now this: Start a new panel dataset, with 3 units and 4 time periods; gretl asks "do you want to enter data"; yes, and then there's a window "edit data"; I enter "5" in obs 1:1 and hit return; then I want to enter another number like "3" for obs 1:2, but when I hit return the number vanishes! Same with any further numbers. Actually I wanted to report a problem with the pxsum() function in subsampled datasets, but this here got in the way while testing... Anyway, to be sure I uninstalled the old gretl version in the "official" Windows way, and reinstalled gretl before I did this. good night, sven