Hi, I am running into the following compile error when using VC7 to compile the BGL text book example on Edge Connectivity (Chap 8.2) boost_1_27_0\boost\property_map.hpp(151): error C2039: 'reference' : is not a member of 'boost::property_traits<PA>' with [ PA=boost::default_color_type * ] at line : typedef typename property_traits<PMap>::reference reference; My first step was to try to compile this using VC6 instead, but in that case I run into the following error : boost_1_27_0\boost\graph\detail\adjacency_list.hpp(1830) : 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 at line : inline vec_adj_list_impl(vertices_size_type _num_vertices) : m_vertices(_num_vertices) { } The last error is coincidentally the same type of compiler error that I just experienced in VC7 to which I recently posted a work around for. I would be extremely grateful for any suggestions for either of these problems... Kind Regards, Wayne Hartell [Non-text portions of this message have been removed]