Hi to all, there seems to be a bug in the parser. A script like command1; command2; # comment command3; generates a segmentation fault, while command1; command2; # comment command3; does not. I not sure if Allin had the intention to allow comments like in the first case, but Gretl should crash even if he hadn´t. The script + data file that crashes on my computer is attached. Regards, David Vonka -- David Vonka <davidek(a)zla-ryba.cz&gt; Ministry of Industry and Trade, Na Frantisku 32, Praha 1, Czech Republic