Hi everyone, I'm trying to create a graph with two internal properties and it is strange because my code works fine when I use only one internal property, and I have a segmentation fault when I attach the second property. Does anyone have a clue why this is happening? Is this a bug? The code is as follows: struct vertex_point_t { typedef vertex_property_tag kind; }; struct vertex_location_t { typedef vertex_property_tag kind; }; struct edge_invalid_t { typedef edge_property_tag kind; }; // vertex properties typedef property < vertex_point_t, Point > domainVertexProperty; // edge propeties typedef property < edge_invalid_t, bool > domainEdgeProperty; typedef adjacency_list< setS, vecS, undirectedS, domainVertexProperty, domainEdgeProperty > domainGraph; this works fine but if I declare the domainVertexProperty as typedef property < vertex_point_t, Point, property < vertex_loation_t, int > > domainVertexProperty; it doesn't work anymore. Thanks for your help.