Dear Allin, I'm trying to make some plots (a lot of plots!) using gnuplot command but Gretl gives me a warning message telling "File exists". This behavior occurs after the 26th plot. I would like to know if this is a feature or a bug ;-) Please take a look athe following script (running on Windows 7 / Gretl 2017c-git build 2017-06-09): <hansl> scalar max_plot = 30 nulldata 100 --preserve setobs 12 1980:01 loop i = 1..max_plot series s$i = normal(0, 1) gnuplot s$i --with-lines --time-series --output=display endloop </hansl> Um abraço, Henrique Andrade