Codebook Generation Error

Hi, everyone.
I've often used codebook v1.1, successfuly; but, tis time, with a given form, I'm facing the following error message
"Error: Failed to make codebook because String index out of range: 1.
in advance thanks for your help

The codebook app is very out of date and I'm not sure when I'll have time to fix the documented issues. Your best bet is to load the form in and print it.

it has worked fine.
Thanks, @yanokwa.