Make the injectors work in any 1.8 version. Now looks through fields for suitable in case of different field names also construct slot using known arguments.

src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -12,12 +12,12 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerQuitEvent;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.plugin.java.JavaPlugin;
-
 import us.myles.ViaVersion.api.ViaVersion;
 import us.myles.ViaVersion.api.ViaVersionAPI;
 import us.myles.ViaVersion.handlers.ViaVersionInitializer;
 import us.myles.ViaVersion.util.ReflectionUtil;
 
+import java.lang.reflect.Field;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
@@ -33,7 +33,7 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
     @Override
     public void onEnable() {
         ViaVersion.setInstance(this);
-        if(System.getProperty("ViaVersion") != null){
+        if (System.getProperty("ViaVersion") != null) {
             getLogger().severe("ViaVersion is already loaded, we don't support reloads. Please reboot if you wish to update.");
             return;
         }
@@ -58,18 +58,29 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
         Class<?> serverClazz = ReflectionUtil.nms("MinecraftServer");
         Object server = ReflectionUtil.invokeStatic(serverClazz, "getServer");
         Object connection = serverClazz.getDeclaredMethod("getServerConnection").invoke(server);
-
-        List<ChannelFuture> futures = ReflectionUtil.get(connection, "g", List.class);
-        if (futures.size() == 0) {
-            throw new Exception("Could not find server to inject (Please ensure late-bind in your spigot.yml is false)");
+        // loop through all fields checking if list
+        boolean injected = false;
+        for (Field field : connection.getClass().getDeclaredFields()) {
+            field.setAccessible(true);
+            Object value = field.get(connection);
+            if (value instanceof List) {
+                for (Object o : (List) value) {
+                    if (o instanceof ChannelFuture) {
+                        ChannelFuture future = (ChannelFuture) o;
+                        ChannelPipeline pipeline = future.channel().pipeline();
+                        ChannelHandler bootstrapAcceptor = pipeline.first();
+                        ChannelInitializer<SocketChannel> oldInit = ReflectionUtil.get(bootstrapAcceptor, "childHandler", ChannelInitializer.class);
+                        ChannelInitializer newInit = new ViaVersionInitializer(oldInit);
+                        ReflectionUtil.set(bootstrapAcceptor, "childHandler", newInit);
+                        injected = true;
+                    } else {
+                        break; // not the right list.
+                    }
+                }
+            }
         }
-
-        for (ChannelFuture future : futures) {
-            ChannelPipeline pipeline = future.channel().pipeline();
-            ChannelHandler bootstrapAcceptor = pipeline.first();
-            ChannelInitializer<SocketChannel> oldInit = ReflectionUtil.get(bootstrapAcceptor, "childHandler", ChannelInitializer.class);
-            ChannelInitializer newInit = new ViaVersionInitializer(oldInit);
-            ReflectionUtil.set(bootstrapAcceptor, "childHandler", newInit);
+        if (!injected) {
+            throw new Exception("Could not find server to inject (Please ensure late-bind in your spigot.yml is false)");
         }
     }
 

src/main/java/us/myles/ViaVersion/transformers/IncomingTransformer.java

@@ -10,6 +10,7 @@ import us.myles.ViaVersion.packets.State;
 import us.myles.ViaVersion.util.PacketUtil;
 import us.myles.ViaVersion.util.ReflectionUtil;
 
+import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
@@ -102,7 +103,9 @@ public class IncomingTransformer {
             if (slot == 45 && windowID == 0) {
                 try {
                     Class<?> setSlot = ReflectionUtil.nms("PacketPlayOutSetSlot");
-                    Object setSlotPacket = setSlot.getConstructors()[1].newInstance(windowID, slot, null);
+                    Constructor setSlotConstruct = setSlot.getDeclaredConstructor(int.class, int.class, ReflectionUtil.nms("ItemStack"));
+                    // properly construct
+                    Object setSlotPacket = setSlotConstruct.newInstance(windowID, slot, null);
                     info.getChannel().pipeline().writeAndFlush(setSlotPacket); // slot is empty
                     slot = -999; // we're evil, they'll throw item on the ground
                 } catch (ClassNotFoundException e) {
@@ -113,6 +116,8 @@ public class IncomingTransformer {
                     e.printStackTrace();
                 } catch (InvocationTargetException e) {
                     e.printStackTrace();
+                } catch (NoSuchMethodException e) {
+                    e.printStackTrace();
                 }
 
             }

src/main/java/us/myles/ViaVersion/transformers/OutgoingTransformer.java

@@ -50,7 +50,7 @@ public class OutgoingTransformer {
         if (packet == null) {
             throw new RuntimeException("Outgoing Packet not found? " + packetID + " State: " + info.getState() + " Version: " + info.getProtocol());
         }
-//        if (packet != PacketType.PLAY_CHUNK_DATA && packet != PacketType.PLAY_KEEP_ALIVE && packet != PacketType.PLAY_TIME_UPDATE && (!packet.name().toLowerCase().contains("move") && !packet.name().contains("look")))
+//        if (packet != PacketType.PLAY_CHUNK_DATA && packet != PacketType.PLAY_KEEP_ALIVE && packet != PacketType.PLAY_TIME_UPDATE && (!packet.name().toLowerCase().contains("move") && !packet.name().toLowerCase().contains("look")))
 //            System.out.println("Packet Type: " + packet + " Original ID: " + packetID + " State:" + info.getState());
         if (packet.getPacketID() != -1) {
             packetID = packet.getNewPacketID();
@@ -60,6 +60,7 @@ public class OutgoingTransformer {
         PacketUtil.writeVarInt(packetID, output);
         if (packet == PacketType.PLAY_NAMED_SOUND_EFFECT) {
             String name = PacketUtil.readString(input);
+
             SoundEffect effect = SoundEffect.getByName(name);
             int catid = 0;
             String newname = name;
@@ -511,7 +512,7 @@ public class OutgoingTransformer {
         output.writeBytes(input);
     }
 
-    private String fixJson(String line) {
+    public static String fixJson(String line) {
         if (line == null || line.equalsIgnoreCase("null")) {
             line = "{\"text\":\"\"}";
         } else {