Program: 166178
Project: 166178
Buggy source:
public static void registerMessages(){
  INSTANCE=NetworkRegistry.INSTANCE.newSimpleChannel("String_Node_Str");
  INSTANCE.registerMessage(PacketRFMonitor.class,PacketRFMonitor.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetAdjacentBlocks.class,PacketGetAdjacentBlocks.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketCrafter.class,PacketCrafter.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetInventory.class,PacketGetInventory.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketSearchItems.class,PacketSearchItems.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetConnectedBlocks.class,PacketGetConnectedBlocks.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetTransmitters.class,PacketGetTransmitters.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetReceivers.class,PacketGetReceivers.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketServerCommand.class,PacketServerCommand.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketRequestIntegerFromServer.class,PacketRequestIntegerFromServer.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetAllReceivers.class,PacketGetAllReceivers.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketForceTeleport.class,PacketForceTeleport.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketInventoryReady.class,PacketInventoryReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketSearchReady.class,PacketSearchReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketAdjacentBlocksReady.class,PacketAdjacentBlocksReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketConnectedBlocksReady.class,PacketConnectedBlocksReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketTransmittersReady.class,PacketTransmittersReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketReceiversReady.class,PacketReceiversReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketIntegerFromServer.class,PacketIntegerFromServer.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketAllReceiversReady.class,PacketAllReceiversReady.class,nextID(),Side.CLIENT);
}

Fixed version (ground truth):
public static void registerMessages(){
  INSTANCE=NetworkRegistry.INSTANCE.newSimpleChannel("String_Node_Str");
  INSTANCE.registerMessage(PacketRFMonitor.class,PacketRFMonitor.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetAdjacentBlocks.class,PacketGetAdjacentBlocks.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketCrafter.class,PacketCrafter.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetInventory.class,PacketGetInventory.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketSearchItems.class,PacketSearchItems.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetConnectedBlocks.class,PacketGetConnectedBlocks.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetTransmitters.class,PacketGetTransmitters.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetReceivers.class,PacketGetReceivers.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketServerCommand.class,PacketServerCommand.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketRequestIntegerFromServer.class,PacketRequestIntegerFromServer.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetAllReceivers.class,PacketGetAllReceivers.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketForceTeleport.class,PacketForceTeleport.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketGetPlayers.class,PacketGetPlayers.class,nextID(),Side.SERVER);
  INSTANCE.registerMessage(PacketInventoryReady.class,PacketInventoryReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketSearchReady.class,PacketSearchReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketAdjacentBlocksReady.class,PacketAdjacentBlocksReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketConnectedBlocksReady.class,PacketConnectedBlocksReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketTransmittersReady.class,PacketTransmittersReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketReceiversReady.class,PacketReceiversReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketIntegerFromServer.class,PacketIntegerFromServer.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketAllReceiversReady.class,PacketAllReceiversReady.class,nextID(),Side.CLIENT);
  INSTANCE.registerMessage(PacketPlayersReady.class,PacketPlayersReady.class,nextID(),Side.CLIENT);
}