Hi, I try to use boost::graph with two bundled properties, listS for vertices and edges, and serialize with write_graphml, and it does not compile: Boost 1.35 and 1.36, Windows Visual C++ 8.0 Here are the most important details of the code: class Host { int idx ; }; class SocketPair { int xxx ; }; typedef boost::adjacency_list< boost::listS, /// Needs stability of iterators. boost::listS, /// Needs stability of iterators. boost::directedS, Host, SocketPair > Graph; Graph gblGrf ; boost::dynamic_properties tmpDP ; boost::write_graphml( std::ofstream("xxx.xml"), boost::vertex_index_map( boost::get( &Host::idx,_gblGrf ) ), gblGrf, tmpDP ); Here is the beginning of the compile errors. Any idea, please ?? Thanks in advance 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : error C2039: 'vertex_descriptor' : is not a member of 'boost::bgl_named_params<T,Tag,Base>' 1> with 1> [ 1> T=boost::bundle_property_map<boost::adjacency_list<boost::listS,boost::l istS,boost::directedS,Host,SocketPair>,void *,Host,int>, 1> Tag=boost::vertex_index_t, 1> Base=boost::no_property 1> ] 1> c:\program files\boost\boost_1_36_0\boost\graph\graphml.hpp(225) : see reference to class template instantiation 'boost::graph_traits<G>' being compiled 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1> i:\remi\graph\graph\graph.cpp(435) : see reference to function template instantiation 'void boost::write_graphml<boost::bgl_named_params<T,Tag,Base>,Netstat::Graph> (std::ostream &,const Graph &,VertexIndexMap,const boost::dynamic_properties &,bool)' being compiled 1> with 1> [ 1> T=boost::bundle_property_map<boost::adjacency_list<boost::listS,boost::l istS,boost::directedS,Host,SocketPair>,void *,Host,int>, 1> Tag=boost::vertex_index_t, 1> Base=boost::no_property, 1> Graph=boost::bgl_named_params<boost::bundle_property_map<boost::adjacenc y_list<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property>, 1> VertexIndexMap=Netstat::Graph 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : error C2146: syntax error : missing ';' before identifier 'vertex_descriptor' 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : error C2602: 'boost::graph_traits<G>::vertex_descriptor' is not a member of a base class of 'boost::graph_traits<G>' 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1> c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : see declaration of 'boost::graph_traits<G>::vertex_descriptor' 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(26) : error C2868: 'boost::graph_traits<G>::vertex_descriptor' : illegal syntax for using-declaration; expected qualified-name 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : error C2039: 'edge_descriptor' : is not a member of 'boost::bgl_named_params<T,Tag,Base>' 1> with 1> [ 1> T=boost::bundle_property_map<boost::adjacency_list<boost::listS,boost::l istS,boost::directedS,Host,SocketPair>,void *,Host,int>, 1> Tag=boost::vertex_index_t, 1> Base=boost::no_property 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : error C2146: syntax error : missing ';' before identifier 'edge_descriptor' 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : error C2602: 'boost::graph_traits<G>::edge_descriptor' is not a member of a base class of 'boost::graph_traits<G>' 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1> c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : see declaration of 'boost::graph_traits<G>::edge_descriptor' 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(27) : error C2868: 'boost::graph_traits<G>::edge_descriptor' : illegal syntax for using-declaration; expected qualified-name 1> with 1> [ 1> G=boost::bgl_named_params<boost::bundle_property_map<boost::adjacency_li st<boost::listS,boost::listS,boost::directedS,Host,SocketPair>,void *,Host,int>,boost::vertex_index_t,boost::no_property> 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(28) : error C2039: 'adjacency_iterator' : is not a member of 'boost::bgl_named_params<T,Tag,Base>' 1> with 1> [ 1> T=boost::bundle_property_map<boost::adjacency_list<boost::listS,boost::l istS,boost::directedS,Host,SocketPair>,void *,Host,int>, 1> Tag=boost::vertex_index_t, 1> Base=boost::no_property 1> ] 1>c:\program files\boost\boost_1_36_0\boost\graph\graph_traits.hpp(29) : error C2039: 'out_edge_iterator' : is not a member of 'boost::bgl_named_params<T,Tag,Base>' 1> with 1> [ 1> T=boost::bundle_property_map<boost::adjacency_list<boost::listS,boost::l istS,boost::directedS,Host,SocketPair>,void *,Host,int>, 1> Tag=boost::vertex_index_t, 1> Base=boost::no_property 1> ]