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Help me! When I open up my world, it always crashes. I tried reinstalling my Java, and it still wouldn't work... HELP ME!!!!!

Here is the crash report:

---- Minecraft Crash Report ----
// Ouch. That hurt

Time: 8/20/14 10:40 PM
Description: Starting integrated server

java.lang.ExceptionInInitializerError
at net.minecraft.server.MinecraftServer.<init>(SourceFile:120)
at bsx.<init>(SourceFile:38)
at bao.a(SourceFile:1610)
at bdb.a(SourceFile:202)
at bdw.a(SourceFile:172)
at bdb.a(SourceFile:301)
at bdw.k(SourceFile:232)
at bdw.p(SourceFile:211)
at bao.p(SourceFile:1328)
at bao.ak(SourceFile:774)
at bao.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)
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 nc.<clinit>(SourceFile:31)
... 12 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)
... 16 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)
... 19 more
Caused by: java.net.SocketException: Unrecognized Windows Sockets error: 10107: socket
at sun.nio.ch.Net.socket0(Native Method)
at sun.nio.ch.Net.serverSocket(Unknown Source)
at sun.nio.ch.ServerSocketChannelImpl.<init>(Unknown Source)
at sun.nio.ch.SelectorProviderImpl.openServerSocketChannel(Unknown Source)
at java.nio.channels.ServerSocketChannel.open(Unknown Source)
at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source)
... 28 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>(SourceFile:120)
at bsx.<init>(SourceFile:38)

-- Starting integrated server --
Details:
Level ID: New World----
Level Name: New World
Stacktrace:
at bao.a(SourceFile:1610)
at bdb.a(SourceFile:202)
at bdw.a(SourceFile:172)
at bdb.a(SourceFile:301)
at bdw.k(SourceFile:232)
at bdw.p(SourceFile:211)

-- Affected screen --
Details:
Screen name: bee
Stacktrace:
at bao.p(SourceFile:1328)
at bao.ak(SourceFile:774)
at bao.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 93926104 bytes (89 MB) / 129499136 bytes (123 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
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4600 GL version 4.2.0 - Build 10.18.10.3277, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

The same thing keeps happening to me on mac and I have looked everywhere and there seems to be no answer yet

Quote from WhereAreMyKeys

Help me! When I open up my world, it always crashes. I tried reinstalling my Java, and it still wouldn't work... HELP ME!!!!!

Here is the crash report:

---- Minecraft Crash Report ----
// Ouch. That hurt

Time: 8/20/14 10:40 PM
Description: Starting integrated server

java.lang.ExceptionInInitializerError
at net.minecraft.server.MinecraftServer.(SourceFile:120)
...

2 Simply Questions:

- Happen this only on one world or on evry world?
(If it only happen on one world we have to try to repair the world)

- Has u already Play u world on Minecraft 1.7.10 or u newly switch form older version (<1.7.2)?
(If u came from an older Minecraft Version u maybe have the Intel Graphiccard Driver Problem)

Quote from Ritter_Kaldor »
2 Simply Questions:

- Happen this only on one world or on evry world?
(If it only happen on one world we have to try to repair the world)

- Has u already Play u world on Minecraft 1.7.10 or u newly switch form older version (<1.7.2)?
(If u came from an older Minecraft Version u maybe have the Intel Graphiccard Driver Problem)

1) This happens to every world.

2) I already had 1.7.10.

I put in a mod the other day, and it started to lag. So, I reinstalled Minecraft and now this issue happens.

To fix the problem seach %appdata% at start then go to .minecraft and drag the folder to your desktop then open minecraft and it will re-download everything. Problem fixed

Quote from Coolpab»

To fix the problem seach %appdata% at start then go to .minecraft and drag the folder to your desktop then open minecraft and it will re-download everything. Problem fixed

Nope, didn't work...