Games : I made a 1.8.3 minecraft server last night and it was working fine. When i try to launch the server now it crashes and this comes up

---- Minecraft Crash Report ---- // Why did you do that?

Time: 8/03/15 1:55 PM Description: Exception in server tick loop

java.lang.IllegalStateException: failed to create a child event loop at io.netty.util.concurrent.MultithreadEventExecutorGroup.(MultithreadEventExecutorGroup.java:68) at io.netty.channel.MultithreadEventLoopGroup.(MultithreadEventLoopGroup.java:49) at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:61) at io.netty.channel.nio.NioEventLoopGroup.(NioEventLoopGroup.java:52) at lm$1.a(SourceFile:44) at lm$1.b(SourceFile:41) at np.c(SourceFile:10) at lm.a(SourceFile:84) at kp.i(SourceFile:150) at net.minecraft.server.MinecraftServer.run(SourceFile:419) at java.lang.Thread.run(Unknown Source) Caused by: io.netty.channel.ChannelException: failed to open a new selector at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:128) at io.netty.channel.nio.NioEventLoop.(NioEventLoop.java:120) at io.netty.channel.nio.NioEventLoopGroup.newChild(NioEventLoopGroup.java:87) at io.netty.util.concurrent.MultithreadEventExecutorGroup.(MultithreadEventExecutorGroup.java:64) ... 10 more Caused by: java.io.IOException: Unable to establish loopback connection at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at sun.nio.ch.PipeImpl$Initializer.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.nio.ch.PipeImpl.(Unknown Source) at sun.nio.ch.SelectorProviderImpl.openPipe(Unknown Source) at java.nio.channels.Pipe.open(Unknown Source) at sun.nio.ch.WindowsSelectorImpl.(Unknown Source) at sun.nio.ch.WindowsSelectorProvider.openSelector(Unknown Source) at io.netty.channel.nio.NioEventLoop.openSelector(NioEventLoop.java:126) ... 13 more Caused by: java.net.BindException: Address already in use: bind at sun.nio.ch.Net.bind0(Native Method) at sun.nio.ch.Net.bind(Unknown Source) at sun.nio.ch.Net.bind(Unknown Source) at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source) at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source) at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source) at sun.nio.ch.PipeImpl$Initializer$LoopbackConnector.run(Unknown Source) ... 22 more

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

-- System Details -- Details: Minecraft Version: 1.8.3 Operating System: Windows 8.1 (amd64) version 6.3 CPU: 8x Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz Java Version: 1.8.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 629775176 bytes (600 MB) / 693633024 bytes (661 MB) up to 954728448 bytes (910 MB) JVM Flags: 2 total; -Xms512m -Xmx1024m IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Profiler Position: N/A (disabled) Is Modded: Unknown (can't tell) Type: Dedicated Server (map_server.txt)