I was trying to work with astar-cities.cpp example and convert to using bundled property maps for the edge properties. This caused numerous issues (see yesterdays post for one example). I found that if I bypass the named parameters and make an explicit call to astar_search( ) then it works OK. Does anyone know if the bundle property maps causes general issues with named parameters? thanks, David --- More info ----------------------------------- Normally, the named parameters would created the property maps that are needed; e.g. thru the use of choose_param(cost, make_iterator_property_map (cost_map.begin(), index_map, cost_map[0])), This appears to break if I use a bundled parameter because of some issues with the limit templates among other things. If I explicitly create all of the parameters, things work fine. e.g. boost::astar_search (g, start, distance_heuristic(locations, goal), astar_goal_visitor<vertex>(goal), // Only the first of named parameters needs boost:: &pred_map[0] ,//boost::predecessor_map( ), &cost_map[0] ,//boost::rank_map( ), &dist_map[0] ,//boost::distance_map( ), weightmap,//boost::weight_map( ), =========<<<<< This was the bundled property &index_map[0],//boost::vertex_index_map( ),//IndexMap, &clr_map[0] ,//boost::color_map( ) , std::less<cost>(), boost::closed_plus<cost>(), std::numeric_limits<cost>::max BOOST_PREVENT_MACRO_SUBSTITUTION (), std::numeric_limits<cost>::min() );//.