aoColumns & columnDefs

Hi,
i had 2 question
i'm try to use columnDefs to declare title and sorting element but i got this error " Uncaught TypeError: Cannot read property 'aDataSort' of undefined" in chrome debugger.

if i revert and i use "aoColumns" everything work, but i think aoColumns is legacy version (i use the 1.10.4 from maxcdn).

i need to associate an extra attribute to each column header, something like ' lang="xyz" ' to allow jquery-lang plugin to translate the column headers. how i con do it ? how i can add extra attributes to columns headers ?

thanks in advance
/stefano