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Hello! I've been having a problem recently with my Modded Minecraft client, where if I break any block, my game crashes. here's the crash report if it helps:

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 9/23/13 10:13 PM
Description: Ticking memory connection

java.lang.NullPointerException
at net.minecraft.item.ItemInWorldManager.func_73079_d(ItemInWorldManager.java:272)
at net.minecraft.item.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:312)
at net.minecraft.item.ItemInWorldManager.func_73074_a(ItemInWorldManager.java:170)
at net.minecraft.network.NetServerHandler.func_72510_a(NetServerHandler.java:492)
at net.minecraft.network.packet.Packet14BlockDig.func_73279_a(SourceFile:46)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:689)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)


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

-- Head --
Stacktrace:
at net.minecraft.item.ItemInWorldManager.func_73079_d(ItemInWorldManager.java:272)
at net.minecraft.item.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:312)
at net.minecraft.item.ItemInWorldManager.func_73074_a(ItemInWorldManager.java:170)
at net.minecraft.network.NetServerHandler.func_72510_a(NetServerHandler.java:492)
at net.minecraft.network.packet.Packet14BlockDig.func_73279_a(SourceFile:46)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)

-- Ticking connection --
Details:
Connection: [email protected]
Stacktrace:
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:689)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_21, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1045662712 bytes (997 MB) / 1568014336 bytes (1495 MB) up to 7635533824 bytes (7281 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8G
AABB Pool Size: 2336 (130816 bytes; 0 MB) allocated, 2088 (116928 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v8.04 FML v6.2.52.836 Minecraft Forge 9.10.0.836 27 mods loaded, 27 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.2.52.836} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.10.0.836} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ImmibisMicroblocks{56.0.1} [Immibis's Microblocks] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Micdoodlecore{} [Micdoodle8 Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_bspkrsCore{v3.03(1.6.2)} [bspkrsCore] ([1.6.2]bspkrsCorev3.03.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.8.7.0} [Damage Indicators] (1.6.2 DamageIndicators v2.8.7.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BetterFurnaces{3.3} [Better Furnaces] ([1.6.2]BetterFurnacesV3.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FloatingRuins{Forge 1.6.2.r02} [FloatingRuins] ([1.6.2]FloatingRuins.Forge.1.6.2.r02.Universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_ReiMinimap{v3.4_01 [1.6.2]} [mod_ReiMinimap] ([1.6.2]ReiMinimap_v3.4_01.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{1.12.15} [Backpack] (backpack-1.12.15-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiblioCraft{1.3.4} [BiblioCraft] (BiblioCraft[v1.3.4].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Core{4.0.1} [BuildCraft] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Builders{4.0.1} [BC Builders] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Energy{4.0.1} [BC Energy] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Factory{4.0.1} [BC Factory] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Transport{4.0.1} [BC Transport] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Silicon{4.0.1} [BC Silicon] (buildcraft-A-4.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ComputerCraft{1.55} [ComputerCraft] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CCTurtle{1.55} [ComputerCraft Turtles] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
SKC-CraftableHorseArmor{1.0.2} [Craftable Horse Armor] (Craftable-Horse-Armor-Mod-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
craftguide{1.5.2} [CraftGuide] (CraftGuide-1.6.7.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
EE3{@[email protected] (build @[email protected])} [Equivalent Exchange 3] (Equivalent-Exchange-3-Mod-1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GalacticraftCore{0.1.38} [Galacticraft Core] (Galacticraft-1.6.2-a0.1.38.494.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IC2{1.118.400-lf} [IndustrialCraft 2] (Industrial-Craft-2-Mod-1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ImmibisCore{56.0.2} [Immibis Core] (Immibis-Core-1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mca{3.4.0} [Minecraft Comes Alive] (MCA v3.4.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 312 (17472 bytes; 0 MB) allocated, 284 (15904 bytes; 0 MB) used
Player Count: 1 / 8; [GCCorePlayerMP['zarichu'/198, l='TEST', x=-1569.71, y=4.00, z=-582.23]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'


Anyone know how to fix it? :|