Hi, I have a problem serializing a graph in my code. I distilled the problem into this program: #include <boost/graph/adjacency_list.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/graph/adj_list_serialize.hpp> using namespace boost; class test; typedef adjacency_list <vecS, vecS, undirectedS, property<vertex_name_t, test> > Graph; typedef Graph::edge_descriptor Edge; class test { public: Edge t; template<class Archive> void serialize(Archive & ar, const unsigned int) { ar & t; } }; int main() { Graph g; boost::archive::text_oarchive oa(std::cout); oa << g; return 0; } This is the error message that I get: /usr/include/boost/serialization/access.hpp:109: error: ‘class boost::detail::edge_desc_impl<boost::undirected_tag, unsigned int>’ has no member named ‘serialize’ If I remove the field "t" of type Edge in the class "test", I don't get this error. I would appreciate it, if someone could point out where the problem is. Thanks, Irek -- Ireneusz (Irek) Szczesniak http://www.irkos.org