// Who set us up the TNT?

Time: 12/17/13 7:51 PM
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
at axh.h(SourceFile:48)
at axh.<init>(SourceFile:34)
at axd.<init>(SourceFile:16)
at axe.a(SourceFile:71)
at azi.a(SourceFile:1577)
at bbq.a(SourceFile:202)
at bcl.a(SourceFile:172)
at bbq.a(SourceFile:301)
at bcl.d(SourceFile:232)
at bcl.k(SourceFile:211)
at azi.p(SourceFile:1308)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)

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

– Head –
Stacktrace:
at axh.h(SourceFile:48)
at axh.<init>(SourceFile:34)
at axd.<init>(SourceFile:16)
at axe.a(SourceFile:71)
at azi.a(SourceFile:1577)
at bbq.a(SourceFile:202)
at bcl.a(SourceFile:172)
at bbq.a(SourceFile:301)
at bcl.d(SourceFile:232)
at bcl.k(SourceFile:211)

– Affected screen –
Details:
Screen name: bct
Stacktrace:
at azi.p(SourceFile:1308)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)

– System Details –
Details:
Minecraft Version: 1.7.4
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 46038552 bytes (43 MB) / 78831616 bytes (75 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.4
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6670 GL version 4.2.12217 Compatibility Profile Context 12.104.0.0, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~_ERROR~ NullPointerException: null
Anisotropic Filtering: Off (1)