I have just tried the last snapshot and I have run an old script that renames a variable within a loop

Something like:

loop for i = 1..j --quiet
...
rename T$i @a
...
end loop

and I get the message

"Sorry, this command is not available in loop mode"
"Error executing script: halting"
 
Using rename within a loop  was allowed up to (and including) version  2016a, which leads me to question: Is it a new feature or a bug?

For your information I am using gretl 64 on a windows-7 Pro machine.

Otherwise the program (new snapshot) does a wonderful job.

Regards,

Javier Sansa