---- Minecraft Crash Report ----
// You're mean.

Time: 7/9/13 1:04 PM
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
	at aln.h(SourceFile:44)
	at aln.<init>(SourceFile:30)
	at alj.<init>(SourceFile:16)
	at alk.a(SourceFile:83)
	at ats.a(SourceFile:1417)
	at auy.a(SourceFile:202)
	at awb.a(SourceFile:69)
	at auy.a(SourceFile:302)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)
	at ats.k(SourceFile:1158)
	at ats.S(SourceFile:663)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
	at aln.h(SourceFile:44)
	at aln.<init>(SourceFile:30)
	at alj.<init>(SourceFile:16)
	at alk.a(SourceFile:83)
	at ats.a(SourceFile:1417)
	at auy.a(SourceFile:202)
	at awb.a(SourceFile:69)
	at auy.a(SourceFile:302)
	at awb.d(SourceFile:128)
	at awb.m(SourceFile:107)

-- Affected screen --
Details:
	Screen name: blq
Stacktrace:
	at ats.k(SourceFile:1158)
	at ats.S(SourceFile:663)
	at ats.d(SourceFile:619)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.6.0_29, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
	Memory: 170950248 bytes (163 MB) / 267943936 bytes (255 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	Launched Version: 1.6.2
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2202, Intel
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: Default
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null