--- Minecraft Crash Report ----
// Shall we play a game?

Time: 10/20/14 4:52 PM
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
at bqm.h(SourceFile:49)
at bqm.<init>(SourceFile:35)
at bqi.<init>(SourceFile:19)
at bqj.a(SourceFile:78)
at bsu.a(SourceFile:1873)
at bxg.i(SourceFile:172)
at bxg.a(SourceFile:135)
at bxf.a(SourceFile:342)
at bxf.k(SourceFile:405)
at bxg.k(SourceFile:81)
at bxf.p(SourceFile:382)
at bsu.r(SourceFile:1473)
at bsu.as(SourceFile:877)
at bsu.a(SourceFile:314)
at net.minecraft.client.main.Main.main(SourceFile:120)


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

-- Head --
Stacktrace:
at bqm.h(SourceFile:49)
at bqm.<init>(SourceFile:35)
at bqi.<init>(SourceFile:19)
at bqj.a(SourceFile:78)
at bsu.a(SourceFile:1873)
at bxg.i(SourceFile:172)
at bxg.a(SourceFile:135)
at bxf.a(SourceFile:342)
at bxf.k(SourceFile:405)
at bxg.k(SourceFile:81)
at bxf.p(SourceFile:382)

-- Affected screen --
Details:
Screen name: bxq
Stacktrace:
at bsu.r(SourceFile:1473)
at bsu.as(SourceFile:877)
at bsu.a(SourceFile:314)
at net.minecraft.client.main.Main.main(SourceFile:120)

-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Mac OS X (x86_64) version 10.6.8
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 164117296 bytes (156 MB) / 228941824 bytes (218 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.8
LWJGL: 2.9.2
OpenGL: Intel GMA 950 OpenGL Engine GL version 1.4 APPLE-1.6.36, Intel Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because EXT_framebuffer_object is supported.
Shaders are available because ARB_shader_objects, ARB_vertex_shader, and ARB_fragment_shader are supported.
VBOs are available because ARB_vertex_buffer_object is supported.

Using VBOs: No
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)