---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 7/17/13 3:30 AM
Description: Rendering screen

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 awe.e(SourceFile:157)
	at awf.a(SourceFile:210)
	at awd.a(SourceFile:173)
	at awe.a(SourceFile:183)
	at bfb.b(SourceFile:718)
	at ats.S(SourceFile:686)
	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 awe.e(SourceFile:157)
	at awf.a(SourceFile:210)
	at awd.a(SourceFile:173)
	at awe.a(SourceFile:183)

-- Screen render details --
Details:
	Screen name: blq
	Mouse location: Scaled: (166, 91). Absolute: (333, 296)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2
Stacktrace:
	at bfb.b(SourceFile:718)
	at ats.S(SourceFile:686)
	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 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 41226280 bytes (39 MB) / 70594560 bytes (67 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 1 total; -Xmx512M
	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: 0, tallocated: 0
	Launched Version: 1.6.2
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 7640G GL version 4.2.11774 Compatibility Profile Context, ATI Technologies Inc.
	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