Minecraft Forums

Everytime I try to open a single player world I crash I have no mods or resourcepacks here is report

---- Minecraft Crash Report ----
// Why is it breaking

Time: 25.10.2013 18:35
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 bbi.a(SourceFile:202)
at bbi.a(SourceFile:292)
at bcd.l(SourceFile:258)
at bcd.k(SourceFile:217)
at azd.o(SourceFile:1303)
at azd.ad(SourceFile:753)
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: What
Level Name: What
Stacktrace:
at azd.a(SourceFile:1591)
at bbi.a(SourceFile:202)
at bbi.a(SourceFile:292)
at bcd.l(SourceFile:258)
at bcd.k(SourceFile:217)

-- Affected screen --
Details:
Screen name: btj
Stacktrace:
at azd.o(SourceFile:1303)
at azd.ad(SourceFile:753)
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 8 (x86) version 6.2
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 48341472 bytes (46 MB) / 83566592 bytes (79 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
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 4000 GL version 4.0.0 - Build 10.18.10.3316, 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)

Hope you can help me

BTW this is my first post

First, welcome to the forums. Its a common practice to put error logs into spoilers to reduce the walls of text, but no biggie bud. Second, I'm no expert on crashes but it would appear to be a conflict with java and your graphics drivers caused by the new update. Try updating java and your graphics drivers and see if it helps. Good luck.

Quote from JSPRINGY

First, welcome to the forums. Its a common practice to put error logs into spoilers to reduce the walls of text, but no biggie bud. Second, I'm no expert on crashes but it would appear to be a conflict with java and your graphics drivers caused by the new update. Try updating java and your graphics drivers and see if it helps. Good luck.

No, it seems to be having trouble starting the local server. Try deleting your minecraft.jar then playing the game again to redownload it.

@Joibesti

If you have a firewall, you need to add an exception for minecraft. Something about the new network code hangs up in my firewal (Avast!), but adding a new rule for minecraft solved my problem!

Hope that helps!

Thanks everybody So I tried updating java and then I tried opening a minecraft world but I crashed :'( And to be honest I have no clue how to update my graphics drivers...

Run minecraft in windowed mode before loading a world
afterwards you can go to fullscreen
This happened to me and seemed to fix it
If it is actually the firewall problem only well then...good luck