Hi, First off . . . great graph library. I can not get Visual C++ 6 SP5 to compile when I try to put multiple properties on the edges. Seems like a problem with the 3rd parameter that a boost::property can take another boost::property. When the 2nd property is taken out of the edge property list, everything works fine. Thanks for the help! Matt Example: // Vertex property - name as a string typedef boost::property<boost::vertex_name_t, std::string> VertexProperties; // Edge property - name as string, weight as a double typedef boost::property< boost::edge_weight_t, double, boost::property< boost::edge_name_t, std::string> > EdgeProperties; // Graph definition typedef boost::adjacency_list< boost::vecS, // Store out-edges in a std::vector boost::vecS, // Store vertex set in a std::vector boost::directedS, // Graph is directed VertexProperties, // Vertex properties EdgeProperties> Graph; // Edge properties Produces the following compiler error: Compiling... routetable.cpp c:\dev\lib\stlport-4.5.3\stlport\stl\char_traits.h(138) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 1794) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information Error executing cl.exe. routing.exe - 1 error(s), 0 warning(s)