Hi Doug: /proj/adaptive2/course/com1205/f00/project/ed creates an exception that Ed and Pengcheng and I don't understand. Is this a bug? -- Karl DemeterJ version 0.8.2 Copyright (c) 2000 Northeastern University Reading project file scs.prj... Running the test... Exception in thread "main" java.lang.ExceptionInInitializerError: java.lang.NullPointerException at edu.neu.ccs.demeter.aplib.TraversalGraph$1.get(TraversalGraph.java:155) at edu.neu.ccs.demeter.aplib.TraversalGraph.mapNode(TraversalGraph.java:251) at edu.neu.ccs.demeter.aplib.TraversalGraph.markForward(TraversalGraph.java:305) at edu.neu.ccs.demeter.aplib.TraversalGraph.compute(TraversalGraph.java:184) at edu.neu.ccs.demeter.dj.TraversalGraph.(TraversalGraph.java:23) at Cd_graph.(Cd_graph.java:28) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at edu.neu.ccs.demeter.dj.ClassGraph.addPackage(ClassGraph.java:97) at edu.neu.ccs.demeter.dj.ClassGraph.(ClassGraph.java:37) at Main.(Main.java:17)