crash

---- Minecraft Crash Report ----
// Oops.

Time: 6/9/15 5:06 PM
Description: Initializing game

java.lang.RuntimeException: java.lang.IllegalStateException: From thread Thread[Client thread,5,main]: Thread[Thread-6,5,] already has the context current
	at cpw.mods.fml.client.SplashProgress.finish(SplashProgress.java:497)
	at cpw.mods.fml.client.FMLClientHandler.haltGame(FMLClientHandler.java:291)
	at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:251)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878)
	at net.minecraft.client.main.Main.main(SourceFile:148)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.IllegalStateException: From thread Thread[Client thread,5,main]: Thread[Thread-6,5,] already has the context current
	at org.lwjgl.opengl.ContextGL.checkAccess(ContextGL.java:184)
	at org.lwjgl.opengl.ContextGL.makeCurrent(ContextGL.java:189)
	at org.lwjgl.opengl.DrawableGL.makeCurrent(DrawableGL.java:110)
	at cpw.mods.fml.client.SplashProgress.finish(SplashProgress.java:489)
	... 11 more