I am having this problem where when I try to break a block, it kicks me, and says "Internal Server Error" ... I can delete the mod that's causing it... Please help! This is my error: [switched out name with PLAYERNAME and IP with 0.0.0.0]

I have the following mods:

CodeChickenCore{0.9.0.3} CodeChicken Core Unloaded->Constructed->Pre-initialized

Micdoodlecore{} Micdoodle8 Core Unloaded->Constructed->Pre-initialized

NotEnoughItems{1.6.0.7} Not Enough Items Unloaded->Constructed->Pre-initialized

craftablespawners{2.0} Craftable Spawners Unloaded->Constructed->Pre-initialized

mod_Airships{Bmanrules' Airships} mod_Airships Unloaded->Constructed->Pre-initialized

AlchemyPlusPlus{release 1.0} Alchemy++ Unloaded->Constructed->Pre-initialized

mod_AncientDimensionMod{1.6.2} mod_AncientDimensionMod Unloaded->Constructed->Pre-initialized

IC2{1.118.400-lf} IndustrialCraft 2 Unloaded->Constructed->Pre-initialized

AtomicScience{0.7.0} Atomic Science Unloaded->Constructed->Pre-initialized

iChunUtil{2.0.0} iChunUtil Unloaded->Constructed->Pre-initialized

Grinder{2.0.0} Grinder Unloaded->Constructed->Pre-initialized

Backpack{1.12.13} Backpack Unloaded->Constructed->Pre-initialized

BoatCraft{1.0.2} BoatCraft Unloaded->Constructed->Pre-initialized

BrewingAPI{1.6.2} Brewing API Unloaded->Constructed->Pre-initialized

BuildCraft|Core{4.0.2} BuildCraft Unloaded->Constructed->Pre-initialized

BuildCraft|Builders{4.0.2} BC Builders Unloaded->Constructed->Pre-initialized

BuildCraft|Energy{4.0.2} BC Energy Unloaded->Constructed->Pre-initialized

BuildCraft|Factory{4.0.2} BC Factory Unloaded->Constructed->Pre-initialized

BuildCraft|Transport{4.0.2} BC Transport Unloaded->Constructed->Pre-initialized

BuildCraft|Silicon{4.0.2} BC Silicon Unloaded->Constructed->Pre-initialized

BurningWarMod{III-B} Burning War Mod Unloaded->Constructed->Pre-initialized

ChestTransporter{1.1.7} Chest Transporter Unloaded->Constructed->Pre-initialized

ChickenChunks{1.3.3.1} ChickenChunks Unloaded->Constructed->Pre-initialized

ClashsoftAPI{1.6.2} Clashsoft API Unloaded->Constructed->Pre-initialized

ColaCraft{Alpha} Coca Cola Mod Unloaded->Constructed->Pre-initialized

ComputerCraft{1.55} ComputerCraft Unloaded->Constructed->Pre-initialized

CCTurtle{1.55} ComputerCraft Turtles Unloaded->Constructed->Pre-initialized

mod_CraftableBedrock{1.6.2} mod_CraftableBedrock Unloaded->Constructed->Pre-initialized

SKC-CraftableHorseArmor{1.0.1} Craftable Horse Armor Unloaded->Constructed->Pre-initialized

CyanSwords{1.6.0} Cyan Warrior Swords Unloaded->Constructed->Pre-initialized

EndOres{v1} End Ores Unloaded->Constructed->Pre-initialized

EnderStorage{1.4.3.1} EnderStorage Unloaded->Constructed->Pre-initialized

Explodables{1.8} Explodables Unloaded->Constructed->Pre-initialized

meteors{2.11.1} Falling Meteors Unloaded->Constructed->Pre-initialized

FerullosMods{2.8.5} Ferullo's Mods Unloaded->Constructed->Pre-initialized

FruitCraftory{1.6.1} FruitCraftory Unloaded->Constructed->Pre-initialized

GalacticraftCore{0.1.38} Galacticraft Core Unloaded->Constructed->Pre-initialized

GalaxyWarfare{v1.0.0} Galaxy Warfare Unloaded->Constructed->Pre-initialized

mod_GravityControl{Version 9001} Gravity Controller Unloaded->Constructed->Pre-initialized

GraviGun{2.0.0} GraviGun Unloaded->Constructed->Pre-initialized

SGCraft{0.6.0} SG Craft Unloaded->Constructed->Pre-initialized

ICBM|Contraption{1.3.0} ICBM|Contraption Unloaded->Constructed->Pre-initialized

ICBM|Sentry{1.3.0} ICBM|Sentry Unloaded->Constructed->Pre-initialized

inventorytweaks{1.56} Inventory Tweaks Unloaded->Constructed->Pre-initialized

KeithyUtils{1.2} Keithy Utils Unloaded->Constructed->Pre-initialized

magicalcrops{3.0.1 BETA} Magical Crops Unloaded->Constructed->Pre-initialized

Mekanism{5.5.7} Mekanism Unloaded->Constructed->Pre-initialized

MekanismGenerators{5.5.7} MekanismGenerators Unloaded->Constructed->Pre-initialized

MekanismTools{5.5.7} MekanismTools Unloaded->Constructed->Pre-initialized

MFFS{3.2.0} Modular Force Field System Unloaded->Constructed->Pre-initialized

minegicka{1.4.1} Minegicka 2 Unloaded->Constructed->Pre-initialized

More Bows{1.5_v1} More Bows mod Unloaded->Constructed->Pre-initialized

MorePotionsMod{1.6.2} More Potions Mod Unloaded->Constructed->Pre-initialized

MoreMachinery{1.1.0} More Machinery Unloaded->Constructed->Pre-initialized

Paintball{1.6.2v1} Paintball Unloaded->Constructed->Pre-initialized

ClaySpawn{1.5} Pam's Clay Spawn Unloaded->Constructed->Pre-initialized

pamdesertcraft{1.0} Pam's DesertCraft Unloaded->Constructed->Pre-initialized

pamextendedglass{1.0} Pam's Extended Glass Unloaded->Constructed->Pre-initialized

GetAllTheSeeds{1.6} Pam's Get all the Seeds! Unloaded->Constructed->Pre-initialized

MushroomSpawn{1.3} Pam's Huge Mushroom Spawn Unloaded->Constructed->Pre-initialized

MelonSpawn{1.5} Pam's Melon Spawn Unloaded->Constructed->Pre-initialized

SimpleRecipes{1.9} Pam's Simple Recipes Unloaded->Constructed->Pre-initialized

pamtemperateplants{1.0} Pam's TemperatePlants Unloaded->Constructed->Pre-initialized

ParachuteMod{1.6.2} Parachute Mod Unloaded->Constructed->Pre-initialized

PortalGun{2.0.0} PortalGun Unloaded->Constructed->Pre-initialized

POTE{1.1.1} Power of the Elements Unloaded->Constructed->Pre-initialized

RedStoneHandGuns{Beta} RedStoneGuns Unloaded->Constructed->Pre-initialized

mod_SavannaBiomeMod{1.6.2} mod_SavannaBiomeMod Unloaded->Constructed->Pre-initialized

Super_Heroes{1.5} Super Heroes Mod Unloaded->Constructed->Pre-initialized

simplethings{0.1} Simple Things Unloaded->Constructed->Pre-initialized

Skorpio's Washing Machine Mod{1.0} Skorpio's Washing Machine Mod Unloaded->Constructed->Pre-initialized

slabcraftmod{1.5} Slabcraft Unloaded->Constructed->Pre-initialized

TLSpecialArmor{1.6.2} SpecialArmor Unloaded->Constructed->Pre-initialized

StevesCarts{2.0.0.a125} Steve's Carts 2 Unloaded->Constructed->Pre-initialized

TConstruct{1.6.2_1.4.dev.24} Tinkers' Construct Unloaded->Constructed->Pre-initialized

TConstruct|CompatMineFactoryReloaded{0.1} TConstruct Compat: MFR Unloaded->Constructed->Pre-initialized

TF2Dispenser{1.6.2} TF2 Dispenser Unloaded->Constructed->Pre-initialized

TF2Sentry{1.6.2} TF2 Sentry Unloaded->Constructed->Pre-initialized

TF2TeamAddon{1.6.1} TF2 TeamAddon Unloaded->Constructed->Pre-initialized

TF2Teleporter{1.6.2} TF2 Teleporter Unloaded->Constructed->Pre-initialized

TwilightForest{1.19.0} The Twilight Forest Unloaded->Constructed->Pre-initialized

weaponmod{1.6.2 v1.13.3} Balkon's WeaponMod Unloaded->Constructed->Pre-initialized

BasicComponents{1.0.0} Basic Components Unloaded->Constructed->Pre-initialized

HERE'S THE ERROR I GET IN THE CONSOLE:

16:29:46 [WARNING] Failed to handle packet for PLAYERNAME/0.0.0.0: java.lang.

NullPointerException

java.lang.NullPointerException

at net.minecraft.item.ItemInWorldManager.func_73079_d(ItemInWorldManager

.java:337)

at net.minecraft.item.ItemInWorldManager.func_73084_b(ItemInWorldManager

.java:445)

at net.minecraft.item.ItemInWorldManager.func_73074_a(ItemInWorldManager

.java:194)

at net.minecraft.network.NetServerHandler.func_72510_a(NetServerHandler.

java:748)

at net.minecraft.network.packet.Packet14BlockDig.func_73279_a(Packet14Bl

ockDig.java:67)

at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:4

69)

at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.

java:231)

at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenT

hread.java:54)

at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747

b(DedicatedServerListenThread.java:34)

at net.minecraft.server.MinecraftServer.func71190_q(MinecraftServer.jav

a:888)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated

Server.java:327)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav

a:757)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:641)

at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.

java:16)

I get an "Internal Server Error" on Minecraft

I'm not at all familiar with 1.6.2, but I'd look at the possible problem of sending packets before the server is properly started. It seems like a misplaced packet which, at the time of receiving, had no code set up to handle it. All mods seem to still be in Pre-init state.