I've seen this post come and go for a while. I think I know what's going on... you might not be uncommenting the the code :P . Try this (note the placement of the */ characters):
/*
If you wish...
The key of...
and the...
file in...
*/
$QA_CONST_PATH_MAP=array(
'questions' => 'perguntas',
'categories' => 'categorias',
'users' => 'users',
'user' => 'user',
);