[Gretl-users] Re: mwrite & mread

dear all, I run into a weird problem with the functions mwrite and mread (Gretl 2019b; ok, I am six month behind... yet I bet there are thousand of users out there with even older versions, so the post could be of some interest). Mwrite creates csv and txt files with matrix dimensions in row 1 which mread refuses to read, producing a "Data error" message. Even more puzzling, deleting row 1 fixes the problem for files including matrices with at least two rows but not for row vectors.