I just ran into this problem using the graphml read feature and found that it is also failing in some tests: *http://tinyurl.com/5dyw4n The error is: error LNK2019: unresolved external symbol "void __cdecl boost::read_graphml(class std::basic_istream<char,struct std::char_traits<char> > &,class boost::mutate_graph &)" (?read_graphml@boost@@YAXAAV?$basic_istream@DU?$char_traits@D@std@@@std@@AAVmutate_graph@1@@Z) referenced in function "void __cdecl boost::read_graphml<class boost::adjacency_list<struct boost::vecS,struct boost::vecS,struct boost::directedS,struct boost::property<enum boost::vertex_index1_t,class Ogre::Vector3,struct boost::no_property>,struct boost::no_property,struct boost::no_property,struct boost::listS> >(class std::basic_istream<char,struct std::char_traits<char> > &,class boost::adjacency_list<struct boost::vecS,struct boost::vecS,struct boost::directedS,struct boost::property<enum boost::vertex_index1_t,class Ogre::Vector3,struct boost::no_property>,struct boost::no_property,struct boost::no_property,struct boost::listS> &,struct boost::dynamic_properties &)" (??$read_graphml@V?$adjacency_list@UvecS@boost@@U12@UdirectedS@2@U?$property@W4vertex_index1_t@boost@@VVector3@Ogre@@Uno_property@2@@2@Uno_property@2@U52@UlistS@2@@boost@@@boost@@YAXAAV?$basic_istream@DU?$char_traits@D@std@@@std@@AAV?$adjacency_list@UvecS@boost@@U12@UdirectedS@2@U?$property@W4vertex_index1_t@boost@@VVector3@Ogre@@Uno_property@2@@2@Uno_property@2@U52@UlistS@2@@0@AAUdynamic_properties@0@@Z) Any ideas? it seems that write_graphml does not result in linker errors. *