Hello Victor, Tuesday, March 23, 2004, 10:34:20 PM, you wrote: VAWJ> it compiles & links for me both with and without the graph include VAWJ> I'm using the libraries built from the CVS sources (about 10 hours ago) Thanks for your reply, I'll try CVS sources when possible, but with the release version 1.31 it doesn't compile, giving a bunch of error messages like d:\libs\boost_1_31_0\boost\graph\detail\adjacency_list.hpp(1278): error C2146: syntax error : missing ';' before identifier 'vertex_descriptor' d:\libs\boost_1_31_0\boost\graph\detail\adjacency_list.hpp(1279): error C2825: 'Config::edge_descriptor': cannot form a qualified name d:\libs\boost_1_31_0\boost\graph\detail\adjacency_list.hpp(1279): error C2039: 'edge_descriptor' : is not a member of 'operator``global namespace''' ... Maybe I'm missing something or has anyone experienced similar problems?