Hi! I'm having an assertion failure at visition_impl.hpp:201 But the assertion doesnt state what could be wrong, there's only a comment saying: // should never be here at runtime: Here is the function that is being called, that shouldnt... template < typename W, typename S , typename Visitor, typename VPCV , typename NBF > inline BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type) visitation_impl( int, int, Visitor&, VPCV , mpl::true_ // is_apply_visitor_unrolled , NBF, W* = 0, S* = 0 ) { // should never be here at runtime: BOOST_ASSERT(false); typedef typename Visitor::result_type result_type; return ::boost::detail::variant::forced_return< result_type >(); } Could anyone help me? Thanks in advance, -- Felipe Magno de Almeida