yes i see now :eh...fine, here you have both
you are having crashes because the bone-indices are in short format (instead of FIFA 14 byte format)
the converter converts it wrong because the original model file is wrong :
the bonematrices of the original (FIFA 16) file are from FIFA 14
the converter only changes the bone-indices format if there s a change between the bonematrices
solution :
i ll see if i can improve the converter,
it is a bit strange maybe (not logic) it dont get fixed automaticly