---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 03.03.14 13:22
Description: Exception in server tick loop

java.lang.NoSuchFieldError: username
	at codechicken.nei.NEISPH.sendHasServerSideTo(NEISPH.java:300)
	at codechicken.nei.ServerHandler.onPlayerLogin(ServerHandler.java:158)
	at cpw.mods.fml.common.registry.GameRegistry.onPlayerLogin(GameRegistry.java:357)
	at cpw.mods.fml.common.network.FMLNetworkHandler.handlePlayerLogin(FMLNetworkHandler.java:300)
	at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:156)
	at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:97)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:691)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 181911248 bytes (173 MB) / 720371712 bytes (687 MB) up to 1908932608 bytes (1820 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G
	AABB Pool Size: 2156 (120736 bytes; 0 MB) allocated, 2156 (120736 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	FML: MCP v8.11 FML v6.4.49.965 Minecraft Forge 9.11.1.965 5 mods loaded, 5 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	FML{6.4.49.965} [Forge Mod Loader] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Forge{9.11.1.965} [Minecraft Forge] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	NotEnoughItems{1.6.1.9} [Not Enough Items] (NotEnoughItems 1.6.1.9.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 340 (19040 bytes; 0 MB) allocated, 340 (19040 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['aka13_404'/252, l='crash', x=244,50, y=63,00, z=248,50]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'