Crash on making new world **PLZ FIX NOW*

Put the summary of the bug you're having here

What I expected to happen was...:
Minecraft would make a new world normally. (actually, this has been going on for me since 1.7 and above.)

What actually happened was...:
The text saying that the world was being created did not appear, and only the dirt background was visible.

Steps to Reproduce:
1. Create a new world or load a world

Crash Report:

---- Minecraft Crash Report ----
// I feel sad now :(

Time: 3/26/14 5:35 PM
Description: Starting integrated server

java.lang.ExceptionInInitializerError
	at net.minecraft.server.MinecraftServer.<init>(SourceFile:126)
	at cek.<init>(SourceFile:34)
	at bfr.a(SourceFile:1701)
	at bie.a(SourceFile:205)
	at biz.a(SourceFile:180)
	at bie.a(SourceFile:310)
	at biz.d(SourceFile:242)
	at biz.k(SourceFile:219)
	at bfr.p(SourceFile:1387)
	at bfr.ai(SourceFile:801)
	at bfr.f(SourceFile:755)
	at net.minecraft.client.main.Main.main(SourceFile:121)
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 oi.<clinit>(SourceFile:32)
	... 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.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)
	... 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:126)
	at cek.<init>(SourceFile:34)

-- Starting integrated server --
Details:
	Level ID: New World
	Level Name: New World
Stacktrace:
	at bfr.a(SourceFile:1701)
	at bie.a(SourceFile:205)
	at biz.a(SourceFile:180)
	at bie.a(SourceFile:310)
	at biz.d(SourceFile:242)
	at biz.k(SourceFile:219)

-- Affected screen --
Details:
	Screen name: bjk
Stacktrace:
	at bfr.p(SourceFile:1387)
	at bfr.ai(SourceFile:801)
	at bfr.f(SourceFile:755)
	at net.minecraft.client.main.Main.main(SourceFile:121)

-- System Details --
Details:
	Minecraft Version: 14w11b
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_01, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 153879912 bytes (146 MB) / 203423744 bytes (194 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 14w11b
	LWJGL: 2.9.1
	OpenGL: Intel(R) HD Graphics Family GL version 3.0.0 - Build 8.15.10.2353, Intel
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
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)
	Anisotropic Filtering: Off (1)