Hello Guys I Have A problem with my minecraft Whenever I install any mod on it I cant load a world or join a Server or Join A lan world Pls Help Here Is The Crash Report and i have uninstall minecraft and reinstated it several times

 

---- Minecraft Crash Report ----

// Don't do that.

 

Time: 6/24/14 1:36 PM

Description: Starting integrated server

 

java.lang.ExceptionInInitializerError

at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:140)

at net.minecraft.server.integrated.IntegratedServer.<init>(IntegratedServer.java:45)

at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2041)

at net.minecraft.client.gui.GuiCreateWorld.func_146284_a(GuiCreateWorld.java:230)

at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)

at net.minecraft.client.gui.GuiCreateWorld.func_73864_a(GuiCreateWorld.java:377)

at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:301)

at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)

at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1579)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:916)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)

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.IllegalStateException: failed to create a child event loop

at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:61)

at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:49)

at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:61)

at io.netty.channel.nio.NioEventLoopGroup.<init>(NioEventLoopGroup.java:52)

at net.minecraft.network.NetworkSystem.<clinit>(NetworkSystem.java:47)

... 18 more

Caused by: io.netty.channel.ChannelException: failed to open a new selector

at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128)

at io.netty.channel.nio.NioEventLoop.<init>(NioEventLoop.java:120)

at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87)

at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:57)

... 22 more

Caused by: java.io.IOException: Unable to establish loopback connection

at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)

at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at sun.nio.ch.PipeImpl.<init>(Unknown Source)

at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source)

at java.nio.channels.Pipe.open(Unknown Source)

at sun.nio.ch.WindowsSelectorImpl.<init>(Unknown Source)

at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source)

at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126)

... 25 more

Caused by: java.net.ConnectException: Connection timed out: connect

at sun.nio.ch.Net.connect0(Native Method)

at sun.nio.ch.Net.connect(Unknown Source)

at sun.nio.ch.Net.connect(Unknown Source)

at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)

at java.nio.channels.SocketChannel.open(Unknown Source)

... 34 more

 

 

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

---------------------------------------------------------------------------------------

 

-- Head --

Stacktrace:

at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:140)

at net.minecraft.server.integrated.IntegratedServer.<init>(IntegratedServer.java:45)

 

-- Starting integrated server --

Details:

Level ID: New World-----

Level Name: New World

Stacktrace:

at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2041)

at net.minecraft.client.gui.GuiCreateWorld.func_146284_a(GuiCreateWorld.java:230)

at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)

at net.minecraft.client.gui.GuiCreateWorld.func_73864_a(GuiCreateWorld.java:377)

at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:301)

at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)

 

-- Affected screen --

Details:

Screen name: net.minecraft.client.gui.GuiMainMenu

Stacktrace:

at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1579)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:916)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)

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 8.1 (amd64) version 6.3

Java Version: 1.7.0_55, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 310157904 bytes (295 MB) / 398983168 bytes (380 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 v9.03 FML v7.2.209.1112 Minecraft Forge 10.12.1.1112 3 mods loaded, 3 mods active

mcp{9.03} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

FML{7.2.209.1112} [Forge Mod Loader] (forge-1.7.2-10.12.1.1112.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Forge{10.12.1.1112} [Minecraft Forge] (forge-1.7.2-10.12.1.1112.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Launched Version: 1.7.2-Forge10.12.1.1112

LWJGL: 2.9.0

OpenGL: Intel® HD Graphics 4600 GL version 4.2.0 - Build 10.18.10.3355, 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)

 

TNX Again and pls help 

Wait, are you trying to join vanilla servers, or servers that have the same mods installed as you? Cos vanilla ones wouldn't let you on if you had mods installed that are meant to be server-side. Generally, excluding client-side mods e.g. minimaps, you have to have exactly the same Minecraft as the server you're trying to join.

As for the problems with single player worlds, I wouldn't know I'm afraid.

No I think your misunderstanding I am not trying to join  a server my mincraft doesnt want to load saves when I click play selected world mimecraft says not responding and than the game crash

Where Do I put the -Djava.net.preferIPv4Stack=true Line?

Tnx I just Didn't see the box it works now Thank You.