Fixed Network Tool crashing on null ItemStacks.

src/main/java/appeng/me/helpers/AENetworkProxy.java

@@ -63,7 +63,7 @@ public class AENetworkProxy implements IGridBlock
 	private final String nbtName; // name
 	private AEColor myColor = AEColor.TRANSPARENT;
 	private NBTTagCompound data = null; // input
-	private ItemStack myRepInstance;
+	private ItemStack myRepInstance = ItemStack.EMPTY;
 	private boolean isReady = false;
 	private IGridNode node = null;
 	private EnumSet<EnumFacing> validSides;

src/main/java/appeng/parts/misc/PartToggleBus.java

@@ -65,7 +65,7 @@ public class PartToggleBus extends PartBasicState
 	public static final IPartModel MODELS_HAS_CHANNEL = new PartModel( MODEL_BASE, MODEL_STATUS_HAS_CHANNEL );
 
 	private static final int REDSTONE_FLAG = 4;
-	private final AENetworkProxy outerProxy = new AENetworkProxy( this, "outer", null, true );
+	private final AENetworkProxy outerProxy = new AENetworkProxy( this, "outer", ItemStack.EMPTY, true );
 	private IGridConnection connection;
 	private boolean hasRedstone = false;
 

src/main/java/appeng/parts/p2p/PartP2PTunnelME.java

@@ -63,7 +63,7 @@ public class PartP2PTunnelME extends PartP2PTunnel<PartP2PTunnelME> implements I
 	}
 
 	private final Connections connection = new Connections( this );
-	private final AENetworkProxy outerProxy = new AENetworkProxy( this, "outer", null, true );
+	private final AENetworkProxy outerProxy = new AENetworkProxy( this, "outer", ItemStack.EMPTY, true );
 
 	public PartP2PTunnelME( final ItemStack is )
 	{