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  1. Minecraft: Java Edition
  2. MC-37226

Not able to create new worlds, or load old worlds.

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • Minecraft 13w42b, Minecraft 13w43a, Minecraft 1.7.1, Minecraft 1.7.2
    • Unconfirmed
    • Survival

      This is the crash-report I get when I try to create a new world, or load an old save.

      Description: Starting integrated server
      
      java.lang.ExceptionInInitializerError
      	at net.minecraft.server.MinecraftServer.<init>(SourceFile:114)
      	at bsk.<init>(SourceFile:38)
      	at azd.a(SourceFile:1591)
      	at bce.e(SourceFile:162)
      	at bcf.a(SourceFile:214)
      	at bay.a(SourceFile:186)
      	at bce.a(SourceFile:187)
      	at bll.b(SourceFile:851)
      	at azd.ad(SourceFile:780)
      	at azd.e(SourceFile:704)
      	at net.minecraft.client.main.Main.main(SourceFile:103)
      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 ms.<clinit>(SourceFile:31)
      	... 11 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)
      	... 15 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)
      	... 18 more
      Caused by: java.net.ConnectException: Connection refused: 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)
      	... 27 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:114)
      	at bsk.<init>(SourceFile:38)
      
      -- Starting integrated server --
      Details:
      	Level ID: Let's play
      	Level Name: Let's play
      Stacktrace:
      	at azd.a(SourceFile:1591)
      	at bce.e(SourceFile:162)
      	at bcf.a(SourceFile:214)
      	at bay.a(SourceFile:186)
      	at bce.a(SourceFile:187)
      
      -- Screen render details --
      Details:
      	Screen name: btj
      	Mouse location: Scaled: (171, 90). Absolute: (342, 298)
      	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
      Stacktrace:
      	at bll.b(SourceFile:851)
      	at azd.ad(SourceFile:780)
      	at azd.e(SourceFile:704)
      	at net.minecraft.client.main.Main.main(SourceFile:103)
      
      -- System Details --
      Details:
      	Minecraft Version: 1.7.2
      	Operating System: Windows 7 (amd64) version 6.1
      	Java Version: 1.7.0_40, Oracle Corporation
      	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
      	Memory: 99794424 bytes (95 MB) / 134742016 bytes (128 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: 1.7.2
      	LWJGL: 2.9.0
      	OpenGL: Intel(R) HD Graphics Family GL version 3.1.0 - Build 8.15.10.2418, Intel
      	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: ~~ERROR~~ NullPointerException: null
      	Anisotropic Filtering: Off (1)

            Unassigned Unassigned
            elflordofdoom Marcus Talbot
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              Created:
              Updated:
              Resolved: