Minecraft Forums

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

Time: 3/4/14 5:28 PM
Description: Initializing game

java.lang.NoClassDefFoundError: cpw/mods/fml/common/ITickHandler
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:443)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
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:209)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:188)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
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:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:487)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:194)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:495)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:850)
at net.minecraft.client.main.Main.main(SourceFile:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.ITickHandler
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 35 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:180)
... 37 more


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(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:443)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
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:209)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:188)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
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:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:487)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:194)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:495)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:850)
at net.minecraft.client.main.Main.main(SourceFile:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 247052032 bytes (235 MB) / 414187520 bytes (395 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.01-pre FML v7.2.116.1029 Minecraft Forge 10.12.0.1029 29 mods loaded, 29 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
FML{7.2.116.1029} [Forge Mod Loader] (forge-1.7.2-10.12.0.1029.jar) Unloaded->Constructed
Forge{10.12.0.1029} [Minecraft Forge] (forge-1.7.2-10.12.0.1029.jar) Unloaded->Constructed
backpackrenderer{1.7.2} [Backpack Renderer] (minecraft.jar) Unloaded->Constructed
bspkrsCore{6.0(1.7.2)} [bspkrsCore] ([1.7.2]bspkrsCore-universal-6.0(1.7.2).jar) Unloaded->Constructed
DamageIndicatorsMod{3.0.8} [Damage Indicators] ([1.7.2]DamageIndicatorsMod-3.0.8.jar) Unloaded->Constructed
TreeCapitator{1.7.2.r01} [TreeCapitator] ([1.7.2]TreeCapitator-universal-1.7.2.r01.jar) Unloaded->Constructed
bcmod{1.7.2 - 2.2.0} [BCMod (Brad16840.Common mod)] (bcmod_1.7.2-2.2.0.jar) Unloaded->Constructed
backpacks16840{1.7.2 - 2.2.0} [Backpacks!] (backpacks_1.7.2-2.2.0.jar) Unloaded->Constructed
BuildCraft|Core{5.0.3} [BuildCraft] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
BuildCraft|Builders{5.0.3} [BC Builders] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
BuildCraft|Energy{5.0.3} [BC Energy] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
BuildCraft|Factory{5.0.3} [BC Factory] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
BuildCraft|Transport{5.0.3} [BC Transport] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
BuildCraft|Silicon{5.0.3} [BC Silicon] (buildcraft-5.0.3.61.jar) Unloaded->Constructed
CustomSpawner{3.2.0.dev.R1} [DrZhark's CustomSpawner] (CustomMobSpawner_3.2.0-DEV-R1.zip) Unloaded->Constructed
customnpcs{1.7.2} [CustomNpcs] (CustomNPCs_1.7.2.jar) Unloaded->Constructed
MoCreatures{6.2.0.dev.R1} [DrZhark's Mo'Creatures Mod] (DrZharks_MoCreatures_Mod_v6.2.0-DEV-R1.zip) Unloaded->Constructed
FlansMod{4.1} [Flans Mod] (FlansMod-4.1.jar) Unloaded
IronChest{6.0.4.713} [Iron Chest] (ironchest-1.7.2-6.0.4.713-universal.jar) Unloaded
levelup{0.3} [Level Up!] (LevelUp!-0.3(1.7.2).jar) Unloaded
LightBridgesAndDoors{0.1.9} [kris91268's Light Bridges and Doors] (Light_Bridges_and_Doors_V1.9.zip) Unloaded
MapWriter{2.1.0} [MapWriter] (MapWriter-1.7.2-2.1.0.jar) Unloaded
radixcore{1.0.0} [RadixCore] (RadixCore-0.8.0.Alpha MC-1.7.2.zip) Unloaded
mca{4.0.0.Alpha} [Minecraft Comes Alive] (MCA-4.0.0.Alph-MC-1.7.2.zip) Unloaded
pchan3{0.7} [PChan3 mods] (PChan3Mods-0.7(1.7.2).jar) Unloaded
RedstonePasteMod{1.6} [Redstone Paste] (RedstonePasteMod-1.7.2-1.6.jar) Unloaded
dg_shc{1.0.0} [Super Hero Core] (SuperHeroesCore_1.0.0.jar) Unloaded
wecraft{0.2} [w3(r4ft Mod] (W3(r4ft-0.2(1.7.2).jar) Unloaded
Launched Version: 1.7.2-Forge10.12.0.1029
LWJGL: 2.9.0
OpenGL: Intel(R) HD Graphics GL version 4.2.0 - Build 10.18.10.3379, Intel
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
Anisotropic Filtering: Off (1)

Some of the mods you are using are not compatible with others. Try putting the mods you know work in first, then putting the otehrs in slowly and testing to make sure they work too.

Flans Mod.... is not 1.7.2 yet.
Try removing that mod and see what happens

(I have no idea why your title says 1.7.4, when the problem is with 1.7.2)