[10:21:40 SEVERE]: Fatal error launching game. Report this to http://bugs.mojang.com please!
java.util.ConcurrentModificationException
    at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
    at java.util.ArrayList$Itr.next(Unknown Source)
    at net.minecraft.launcher.updater.a.getInstalledVersions(Unknown Source)
    at net.minecraft.launcher.Launcher.ak(Unknown Source)
    at net.minecraft.launcher.game.a.B(Unknown Source)
    at com.mojang.launcher.b.b.a.b(Unknown Source)
    at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(Unknown Source)
    at com.mojang.launcher.updater.download.DownloadJob.access$0(Unknown Source)
    at com.mojang.launcher.updater.download.DownloadJob$1.run(Unknown Source)
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

[10:22:39 SEVERE]: Game ended with bad state (exit code -1073740940)
[10:22:39 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[10:22:39 INFO]: Deleting C:UsersclaudiakarinaAppDataRoaming.minecraftversions1.8_skin1.8_skin-natives-210521294892073
[10:22:39 WARNING]: Couldn't delete C:UsersclaudiakarinaAppDataRoaming.minecraftversions1.8_skin1.8_skin-natives-210521294892073 - scheduling for deletion upon exit
[10:22:40 INFO]: Installed CompleteVersion{id='1.7.10', updatedTime=Wed Jun 01 08:45:48 ART 2016, releasedTime=Wed Jun 01 08:45:48 ART 2016, type=RELEASE, libraries=[Library{name='com.mojang:netty:1.6', rules=null, natives=null, extract=null}, Library{name='com.mojang:realms:1.3.5', rules=null, natives=null, extract=null}, Library{name='org.apache.commons:commons-compress:1.8.1', rules=null, natives=null, extract=null}, Library{name='org.apache.httpcomponents:httpclient:4.3.3', rules=null, natives=null, extract=null}, Library{name='commons-logging:commons-logging:1.1.3', rules=null, natives=null, extract=null}, Library{name='org.apache.httpcomponents:httpcore:4.3.2', rules=null, natives=null, extract=null}, Library{name='java3d:vecmath:1.3.1', rules=null, natives=null, extract=null}, Library{name='net.sf.trove4j:trove4j:3.0.3', rules=null, natives=null, extract=null}, Library{name='com.ibm.icu:icu4j-core-mojang:51.2', rules=null, natives=null, extract=null}, Library{name='net.sf.jopt-simple:jopt-simple:4.5', rules=null, natives=null, extract=null}, Library{name='com.paulscode:codecjorbis:20101023', rules=null, natives=null, extract=null}, Library{name='com.paulscode:codecwav:20101023', rules=null, natives=null, extract=null}, Library{name='com.paulscode:libraryjavasound:20101123', rules=null, natives=null, extract=null}, Library{name='com.paulscode:librarylwjglopenal:20100824', rules=null, natives=null, extract=null}, Library{name='com.paulscode:soundsystem:20120107', rules=null, natives=null, extract=null}, Library{name='io.netty:netty-all:4.0.10.Final', rules=null, natives=null, extract=null}, Library{name='com.google.guava:guava:15.0', rules=null, natives=null, extract=null}, Library{name='org.apache.commons:commons-lang3:3.1', rules=null, natives=null, extract=null}, Library{name='commons-io:commons-io:2.4', rules=null, natives=null, extract=null}, Library{name='commons-codec:commons-codec:1.9', rules=null, natives=null, extract=null}, Library{name='net.java.jinput:jinput:2.0.5', rules=null, natives=null, extract=null}, Library{name='net.java.jutils:jutils:1.0.0', rules=null, natives=null, extract=null}, Library{name='com.google.code.gson:gson:2.2.4', rules=null, natives=null, extract=null}, Library{name='com.mojang:authlib:1.5.21', rules=null, natives=null, extract=null}, Library{name='org.apache.logging.log4j:log4j-api:2.0-beta9', rules=null, natives=null, extract=null}, Library{name='org.apache.logging.log4j:log4j-core:2.0-beta9', rules=null, natives=null, extract=null}, Library{name='org.lwjgl.lwjgl:lwjgl:2.9.1', rules=null, natives=null, extract=null}, Library{name='org.lwjgl.lwjgl:lwjgl_util:2.9.1', rules=null, natives=null, extract=null}, Library{name='org.lwjgl.lwjgl:lwjgl-platform:2.9.1', rules=null, natives={LINUX=natives-linux, OSX=natives-osx, WINDOWS=natives-windows}, extract=com.mojang.launcher.versions.ExtractRules@6eae1c}, Library{name='net.java.jinput:jinput-platform:2.0.5', rules=null, natives={LINUX=natives-linux, OSX=natives-osx, WINDOWS=natives-windows}, extract=com.mojang.launcher.versions.ExtractRules@e3e20c5}, Library{name='tv.twitch:twitch:5.16', rules=null, natives=null, extract=null}, Library{name='tv.twitch:twitch-platform:5.16', rules=[Rule{action=ALLOW, os=null}, Rule{action=DISALLOW, os=OSRestriction{name=LINUX, version='null'}}], natives={LINUX=natives-linux, OSX=natives-osx, WINDOWS=natives-windows-${arch}}, extract=com.mojang.launcher.versions.ExtractRules@2645f6}, Library{name='tv.twitch:twitch-external-platform:4.5', rules=[Rule{action=ALLOW, os=OSRestriction{name=WINDOWS, version='null'}}], natives={WINDOWS=natives-windows-${arch}}, extract=com.mojang.launcher.versions.ExtractRules@18fa4490}], mainClass='net.minecraft.client.main.Main', jar='null', minimumLauncherVersion=13}