It's true that you can't use func_get_args() as a direct parameter, which is why the Q2A code base uses the following trick:
return qa_call_override(__FUNCTION__, $args=func_get_args());
But it seems like some versions of PHP still don't like that, so I will change it to the following, everywhere it appears, for the final 1.5 release:
{ $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }