Hello, I am trying to create an instance of edmonds_augmenting_path_finder : --------- test.cpp --------- #include <boost/graph/adjacency_list.hpp> #include <boost/graph/max_cardinality_matching.hpp> using namespace std; using namespace boost; typedef adjacency_list<vecS, vecS, undirectedS> custom_graph; [...] typedef std::vector<graph_traits<custom_graph>::vertex_descriptor> matemap_t; matemap_t mate(42); custom_graph g(42); edmonds_augmenting_path_finder<custom_graph, matemap_t, property_map<custom_graph, vertex_index_t>::type > augmentator(g, mate, get(vertex_index, g)); [...] --------------------------- The compiler (g++) returns the following error : /.../max_cardinality_matching.hpp: In constructor 'boost::edmonds_augmenting_path_finder<Graph, MateMap, VertexIndexMap>::edmonds_augmenting_path_finder(const Graph&, MateMap, VertexIndexMap) [with Graph = boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS, boost::no_property, boost::no_property, boost::no_property, boost::listS>, MateMap = std::vector<long unsigned int, std::allocator<long unsigned int> >, VertexIndexMap = boost::vec_adj_list_vertex_id_map<boost::no_property, long unsigned int>]': /.../convert.cpp:102: instantiated from here /.../max_cardinality_matching.hpp:190: error: no matching function for call to 'get(std::vector<long unsigned int, std::allocator<long unsigned int> >&, const long unsigned int&)' How can I fix this ? Thank you, Alexandre