Hi, I'm using GeoMason to make a city simulation (agents walking along roads between houses) but might have come across a bug. I want to get the road network (a sim.​field.​network.Network object) from the field (a sim.​util.​ geo.​GeomPlanarGraph object) to find out if the graph is connected or not. But the call to 'network.getNetwork()' causes the ClassCastException below. You can re-create this bug in CampusWorld but putting 'network.getNetwork();' anywhere (e.g. I currently have it as the first thing to be done after the super.start() call in the CampusWorld.start() method). See the output from CapusWorld below. Any ideas? Thanks, Nick MASON Version 17. For further options, try adding ' -help' at end. reading buildings layer reading roads layer reading walkways layer Done reading data Job: 0 Seed: -648980294 Starting sim.app.geo.campusworld.CampusWorld Exception in thread "MASON Model: class sim.app.geo.campusworld.CampusWorld" java.lang.ClassCastException: sim.util.geo.GeomPlanarGraphEdge cannot be cast to com.vividsolutions.jts.planargraph.DirectedEdge at sim.util.geo.GeomPlanarGraph.getNetwork(GeomPlanarGraph.java:151) at sim.app.geo.campusworld.CampusWorld.start(CampusWorld.java:162) at sim.engine.SimState.doLoop(SimState.java:545) at sim.engine.SimState.doLoop(SimState.java:342) at sim.app.geo.campusworld.CampusWorld.main(CampusWorld.java:202) Java Result: 1