Error: "argument of type 'bool' is not iterable"

hi, I think I’ve got to the bottom of it. I’ve attached the simplest possible form where I get the bool not iterable error on preview - it’s to do with the “select_one xxx or_other” question.

If I just have “select_one xxx” then I can preview fine. Once I add the “or_other” then I get the error on first preview (but the workaround of going into edit mode then saving even if no changes are made allows me to then preview with no error). The xls download before editing and after editing look the same to me though.

kobotest4.xls (22 KB)

Thanks

natalie