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Here is the error log that appeared after running flans mod and a few others it was running fine before i put in flans mod

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

Time: 4/12/15 7:40 AM
Description: Initializing game

java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
com/eloraam/redpower/base/BaseProxy.getServerGuiElement(ILnet/minecraft/entity/ai/EntityAIHurtByTarget;Lnet/minecraft/item/Item;III)Ljava/lang/Object; @49: invokestatic
Reason:
Type 'net/minecraft/item/Item' (current frame, stack[3]) is not assignable to 'net/minecraft/item/ItemNameTag'
Current Frame:
bci: @49
flags: { }
locals: { 'com/eloraam/redpower/base/BaseProxy', integer, 'net/minecraft/entity/ai/EntityAIHurtByTarget', 'net/minecraft/item/Item', integer, integer, integer }
stack: { uninitialized 32, uninitialized 32, 'net/minecraft/entity/ai/EntityAIDefendVillage', 'net/minecraft/item/Item', integer, integer, integer, 'java/lang/Class' }
Bytecode:
0000000: 1baa 0000 0000 008d 0000 0001 0000 0004
0000010: 0000 001f 0000 003a 0000 0055 0000 0070
0000020: bb00 4d59 2cb4 001d 2d15 0415 0515 0612
0000030: 1fb8 0051 c000 1fb7 0052 b0bb 0054 592c
0000040: b400 1d2d 1504 1505 1506 122c b800 51c0
0000050: 002c b700 55b0 bb00 5759 2cb4 001d 2d15
0000060: 0415 0515 0612 0bb8 0051 c000 0bb7 005a
0000070: b0bb 005c 592c b400 1d2c b400 1db6 0062
0000080: b800 682c b400 1db6 0062 b700 6bb0 01b0
0000090:
Stackmap Table:
same_frame(@32)
same_frame(@59)
same_frame(@86)
same_frame(@113)
same_frame(@142)

at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:58)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:524)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:511)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:183)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:473)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:808)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)


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

-- Head --
Stacktrace:
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:274)
at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:58)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:524)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:511)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:183)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:473)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:808)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Linux (amd64) version 3.10.18
Java Version: 1.7.0_75, Oracle Corporation
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 124335000 bytes (118 MB) / 234708992 bytes (223 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v8.11 FML v6.4.45.953 Minecraft Forge 9.11.1.953 33 mods loaded, 33 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
FML{6.4.45.953} [Forge Mod Loader] (minecraftforge-9.11.1.953.jar) Unloaded->Constructed
Forge{9.11.1.953} [Minecraft Forge] (minecraftforge-9.11.1.953.jar) Unloaded->Constructed
CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed
PlayerAPI{1.1} [Player API] (minecraft.jar) Unloaded->Constructed
AnimatedPlayer{1.3.0} [Animated Player Mod] (Animated_Player_v1.3.0_mc1.6.4.zip) Unloaded->Constructed
ComputerCraft{1.57} [ComputerCraft] (ComputerCraft1.57.zip) Unloaded->Constructed
CCTurtle{1.57} [ComputerCraft Turtles] (ComputerCraft1.57.zip) Unloaded->Constructed
FlansMod{4.1.1} [Flans Mod] (FlansMod-4.1.1.jar) Unloaded->Constructed
Hats{2.1.5} [Hats] (Hats.zip) Unloaded->Constructed
IC2{2.0.357-experimental} [IndustrialCraft 2] (IndustrialCraft 2.jar) Unloaded->Constructed
IronChest{5.4.1.702} [Iron Chest] (Iron Chest.zip) Unloaded->Constructed
lucky{4.2.1} [Lucky Block] (Lucky Block.jar) Unloaded->Constructed
MoreSwordsMod{2.6.0} [More Swords Mod] (More Swords Mod 2.6.0 For 1.6.4.jar) Unloaded->Constructed
Morph{0.7.2} [Morph] (Morph-Beta-0.7.2.zip) Unloaded->Constructed
cfm{3.3.2} [?6MrCrayfish's Furniture Mod] (MrCrayfishs-Furniture-Mod-1.6.4.jar) Unloaded->Constructed
ForgeMultipart{1.0.0.244} [Forge Multipart] (ForgeMultipart-universal-1.6.4-1.0.0.244.jar) Unloaded->Constructed
ProjRed|Core{4.3.7.32} [ProjectRed] (ProjectRedBase-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Transmission{4.3.7.32} [ProjectRed-Transmission] (ProjectRedIntegration-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Transportation{4.3.7.32} [ProjectRed-Transportation] (ProjectRedMechanical-BETA-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Exploration{4.3.7.32} [ProjectRed-Exploration] (ProjectRedWorld-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Compatibility{4.3.7.32} [ProjectRed-Compatibility] (ProjectRedCompat-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Integration{4.3.7.32} [ProjectRed-Integration] (ProjectRedIntegration-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Illumination{4.3.7.32} [ProjectRed-Illumination] (ProjectRedLighting-1.6.4-4.3.7.32.jar) Unloaded->Constructed
ProjRed|Expansion{4.3.7.32} [ProjectRed-Expansion] (ProjectRedMechanical-BETA-1.6.4-4.3.7.32.jar) Unloaded->Constructed
RedPowerCore{2.0pr6} [RedPower] (RedPower-2-Core-1.4.7.zip) Unloaded
RedPowerBase{2.0pr6} [RP Base] (RedPower-2-Core-1.4.7.zip) Unloaded
awger_SmallBoat{0.10.6} [SmallBoat] (Small-Boats-Mod-1.6.4.jar) Unloaded
awger_Punt{0.10.6} [Punt] (Small-Boats-Mod-1.6.4.jar) Unloaded
awger_Whitehall{0.10.6} [Whitehall] (Small-Boats-Mod-1.6.4.jar) Unloaded
awger_Hoy{0.10.6} [Hoy] (Small-Boats-Mod-1.6.4.jar) Unloaded
McMultipart{1.0.0.244} [Minecraft Multipart Plugin] (ForgeMultipart-universal-1.6.4-1.0.0.244.jar) Unloaded
ForgeMicroblock{1.0.0.244} [Forge Microblocks] (ForgeMultipart-universal-1.6.4-1.0.0.244.jar) Unloaded
Launched Version: 1.6.4-Forge9.11.1.953
LWJGL: 2.9.0
OpenGL: Mesa DRI Intel(R) Bay Trail GL version 3.0 Mesa 10.1.3, Intel Open Source Technology Center
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Pack: Default
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

This section is for mods. Not crashes with mods on. Please post under Modified Support.