Program: 10329
Project: 10329
Buggy source:
@EventHandler public void entityDeath(EntityDeathEvent event){
  Player player=null;
  dNPC npc=null;
  Map<String,dObject> context=new HashMap<String,dObject>();
  dEntity entity=new dEntity(event.getEntity());
  context.put("String_Node_Str",entity.getDenizenObject());
  if (entity.isNPC())   npc=entity.getDenizenNPC();
 else   if (entity.isPlayer())   player=entity.getPlayer();
  if (entityKillers.containsKey(entity.getUUID())) {
    context.put("String_Node_Str",entityKillers.get(entity.getUUID()));
    entityKillers.remove(entity.getUUID());
  }
  PlayerDeathEvent subEvent=null;
  if (event instanceof PlayerDeathEvent) {
    subEvent=(PlayerDeathEvent)event;
    context.put("String_Node_Str",new Element(subEvent.getDeathMessage()));
    if (player != null)     context.put("String_Node_Str",dInventory.mirrorBukkitInventory(player.getInventory()));
  }
  String determination=EventManager.doEvents(Arrays.asList("String_Node_Str",entity.identifyType() + "String_Node_Str","String_Node_Str",entity.identifyType() + "String_Node_Str"),npc,player,context,true).toUpperCase();
  if (determination.startsWith("String_Node_Str")) {
    determination=determination.substring(6);
  }
  if (determination.startsWith("String_Node_Str")) {
    event.getDrops().clear();
    if (determination.endsWith("String_Node_Str")) {
      event.setDroppedExp(0);
    }
  }
 else   if (determination.equals("String_Node_Str")) {
    event.setDroppedExp(0);
  }
 else   if (Argument.valueOf(determination).matchesArgumentList(dItem.class)) {
    dList drops=dList.valueOf(determination.substring(6));
    drops.filter(dItem.class);
    event.getDrops().clear();
    for (    String drop : drops) {
      dItem item=dItem.valueOf(drop);
      if (item != null)       event.getDrops().add(item.getItemStack());
    }
  }
 else   if (Argument.valueOf(determination).matchesPrimitive(aH.PrimitiveType.Integer)) {
    int xp=Integer.valueOf(determination.substring(3));
    event.setDroppedExp(xp);
  }
 else   if (!determination.equals("String_Node_Str")) {
    if (event instanceof PlayerDeathEvent) {
      subEvent.setDeathMessage(determination);
    }
  }
}

Fixed version (ground truth):
@EventHandler public void entityDeath(EntityDeathEvent event){
  Player player=null;
  dNPC npc=null;
  Map<String,dObject> context=new HashMap<String,dObject>();
  dEntity entity=new dEntity(event.getEntity());
  context.put("String_Node_Str",entity.getDenizenObject());
  if (entity.isNPC())   npc=entity.getDenizenNPC();
 else   if (entity.isPlayer())   player=entity.getPlayer();
  if (entityKillers.containsKey(entity.getUUID())) {
    context.put("String_Node_Str",entityKillers.get(entity.getUUID()));
    entityKillers.remove(entity.getUUID());
  }
  PlayerDeathEvent subEvent=null;
  if (event instanceof PlayerDeathEvent) {
    subEvent=(PlayerDeathEvent)event;
    context.put("String_Node_Str",new Element(subEvent.getDeathMessage()));
    if (player != null)     context.put("String_Node_Str",dInventory.mirrorBukkitInventory(player.getInventory()));
  }
  String determination=EventManager.doEvents(Arrays.asList("String_Node_Str",entity.identifyType() + "String_Node_Str","String_Node_Str",entity.identifyType() + "String_Node_Str"),npc,player,context,true);
  if (determination.toUpperCase().startsWith("String_Node_Str")) {
    determination=determination.substring(6);
  }
  if (determination.toUpperCase().startsWith("String_Node_Str")) {
    event.getDrops().clear();
    if (determination.endsWith("String_Node_Str")) {
      event.setDroppedExp(0);
    }
  }
 else   if (determination.toUpperCase().equals("String_Node_Str")) {
    event.setDroppedExp(0);
  }
 else   if (Argument.valueOf(determination).matchesArgumentList(dItem.class)) {
    dList drops=dList.valueOf(determination);
    drops.filter(dItem.class);
    event.getDrops().clear();
    for (    String drop : drops) {
      dItem item=dItem.valueOf(drop);
      if (item != null)       event.getDrops().add(item.getItemStack());
    }
  }
 else   if (Argument.valueOf(determination).matchesPrimitive(aH.PrimitiveType.Integer)) {
    int xp=Integer.valueOf(determination.substring(3));
    event.setDroppedExp(xp);
  }
 else   if (!determination.equals("String_Node_Str")) {
    if (event instanceof PlayerDeathEvent) {
      subEvent.setDeathMessage(determination);
    }
  }
}