Minecraft Forums

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 4/17/16 9:15 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: cpw/mods/fml/common/IPlayerTracker
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878)
at net.minecraft.client.main.Main.main(SourceFile:148)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/common/IPlayerTracker
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:278)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:440)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
... 10 more
Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.IPlayerTracker
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 35 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 37 more

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

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Linux (amd64) version 3.10.18
Java Version: 1.7.0_95, Oracle Corporation
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 139074992 bytes (132 MB) / 305094656 bytes (290 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
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 30 mods loaded, 30 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UC FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UC Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UC appliedenergistics2-core{rv3-beta-5} [Applied Energistics 2 Core] (minecraft.jar)
UC CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar)
UC NotEnoughItems{1.0.5.118} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.118-universal.jar)
UC <CoFH ASM>{000} [CoFH ASM] (minecraft.jar)
UC Trapcraft{v2.2.1a} [Trapcraft] ([1.7.10] Trapcraft - v2.3.0a.zip)
UC appliedenergistics2{rv3-beta-5} [Applied Energistics 2] (appliedenergistics2-rv3-beta-5.jar)
UC Backpack{2.0.1} [Backpack] (Backpacks-Mod.jar)
UC BetterTitleScreen{1.7.10-1.1} [Better Title Screen] (BetterTitleScreen-1.7.10-1.1.jar)
UC CoFHCore{1.7.10R3.1.2} [CoFH Core] (CoFHCore-[1.7.10]3.1.2-325.jar)
UC BigReactors{0.4.3A} [Big Reactors] (BigReactors-0.4.3A.jar)
UC CustomPets{1.0.3} [Custom Pets] (custompets-1.7.10-1.0.3-universal.jar)
UC emeraldmod{3.5.1} [EmeraldMod] (Emerald-Mod-1.7.10.jar)
UC ExtraUtilities{1.2.12} [Extra Utilities] (extrautilities-1.2.12.jar)
UC fossil{1.7.10 Build 6.4b} [Fossils and Archeology Revival] (Fossils_Archeology_Revival-1.7.10_Build-6.4b.jar)
UC iChunUtil{4.1.0} [iChunUtil] (iChunUtil-4.1.0.jar)
UE GraviGun{2.0.0} [GraviGun] (GravityGun2.0.0.zip)
UC helpfulvillagers{1.2.4} [Helpful Villagers] (helpfulvillagers-1.7.10-1.2.4.jar)
UC LunatriusCore{1.1.2.21} [LunatriusCore] (LunatriusCore-1.7.10-1.1.2.21-universal.jar)
UC InGameInfoXML{2.8.1.82} [InGame Info XML] (InGameInfoXML-1.7.10-2.8.1.82-universal.jar)
UC journeymap{@[email protected]} [JourneyMap] (journeymap-1.7.10-5.1.0-unlimited.jar)
UC Mantle{1.7.10-0.3.2.jenkins191} [Mantle] (Mantle-1.7.10-0.3.2b.jar)
UC Morph{0.9.2} [Morph] (Morph-Beta-0.9.2.jar)
UC Waila{1.5.10} [Waila] (Waila-1.5.10_1.7.10.jar)
UC TConstruct{1.7.10-1.8.8.build988} [Tinkers' Construct] (TConstruct-1.7.10-1.8.8.jar)
UC VeinMiner{0.31.4_build.unknown} [Vein Miner] (Vein-Miner-Mod-1.7.10.jar)
UC VeinMinerModSupport{0.31.4_build.unknown} [Mod Support] (Vein-Miner-Mod-1.7.10.jar)
UC IguanaTweaksTConstruct{1.7.10-2.1.6.163} [Iguana Tinker Tweaks] (IguanaTinkerTweaks-1.7.10-2.1.6.jar)
GL info: ' Vendor: 'Intel Open Source Technology Center' Version: '3.0 Mesa 10.1.3' Renderer: 'Mesa DRI Intel(R) Bay Trail '
AE2 Version: beta rv3-beta-5 for Forge 10.13.4.1448
CoFHCore: -[1.7.10]3.1.2-325
Mantle Environment: Environment healthy.
TConstruct Environment: Environment healthy.