[Gretl-devel] tokenizer error

Hi, with the latest snapshot (I think, how can I see the build date for gretlcli.exe?) I get the following message: +++ tokenizer: err=18 on 'loop foreach i @smnames --quiet' where 'smnames' is a string variable with space-delimited names. However, this doesn't seem to be an error because gretl doesn't stop but continues to process the script. So what does err=18 mean and should I care? thanks, sven