... You originally said you were using 9.6.13.405512 (Primo Truck 2014), but now you're saying NextGen. The voice pack in this thread is very old and is for old Primo, not NextGen. So it's not guarantee to work with it; you might have to post in the NextGen thread ...
FYI - He said he is using "Ferrari NextGen", which is just a highly customized version of Primo 405512 (many UX files and some graphical modifications). It's still Primo 2.4.405512 though.
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