From 96cc518fb04d5c75492be0de20c237adb39d0f0d Mon Sep 17 00:00:00 2001
From: "Kristian S. Stangeland" <kr_stang@hotmail.com>
Date: Thu, 30 Jan 2014 02:04:38 +0100
Subject: [PATCH] Throw a more descriptive error of a packet type hasn't got a
 class.

---
 .../com/comphenix/protocol/injector/StructureCache.java    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ProtocolLib/src/main/java/com/comphenix/protocol/injector/StructureCache.java b/ProtocolLib/src/main/java/com/comphenix/protocol/injector/StructureCache.java
index 46d45564..54902cb6 100644
--- a/ProtocolLib/src/main/java/com/comphenix/protocol/injector/StructureCache.java
+++ b/ProtocolLib/src/main/java/com/comphenix/protocol/injector/StructureCache.java
@@ -60,7 +60,12 @@ public class StructureCache {
 	 */
 	public static Object newPacket(PacketType type) {
 		try {
-			return PacketRegistry.getPacketClassFromType(type, true).newInstance();
+			Class<?> clazz = PacketRegistry.getPacketClassFromType(type, true);
+			
+			// Check the return value
+			if (clazz != null)
+				return clazz.newInstance();
+			throw new IllegalArgumentException("Cannot find associated packet class: " + type);
 		} catch (InstantiationException e) {
 			return null;
 		} catch (IllegalAccessException e) {