Minecraft Forums

Howdy--been crashing with Java 7, so I went back to Java 6 and still no dice.

Can anyone recommend another fix based on this report?

Thanks so much!

t



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

Time: 1/16/13 7:19 PM
Description: Updating screen events

java.lang.RuntimeException: Failed to check session lock, aborting
at ahv.h(SourceFile:49)
at ahv.<init>(SourceFile:35)
at ahr.<init>(SourceFile:16)
at ahs.a(SourceFile:78)
at net.minecraft.client.Minecraft.a(SourceFile:1370)
at auo.e(SourceFile:157)
at auo.a(SourceFile:122)
at aul.a(SourceFile:72)
at aul.d(SourceFile:127)
at aul.m(SourceFile:111)
at net.minecraft.client.Minecraft.l(SourceFile:1086)
at net.minecraft.client.Minecraft.J(SourceFile:582)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
at ahv.h(SourceFile:49)
at ahv.<init>(SourceFile:35)
at ahr.<init>(SourceFile:16)
at ahs.a(SourceFile:78)
at net.minecraft.client.Minecraft.a(SourceFile:1370)
at auo.e(SourceFile:157)
at auo.a(SourceFile:122)
at aul.a(SourceFile:72)
at aul.d(SourceFile:127)
at aul.m(SourceFile:111)

-- Affected screen --
Details:
Screen name: bey
Stacktrace:
at net.minecraft.client.Minecraft.l(SourceFile:1086)
at net.minecraft.client.Minecraft.J(SourceFile:582)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.6.0_38, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 479100480 bytes (456 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
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
LWJGL: 2.4.2
OpenGL: Intel(R) Graphics Media Accelerator HD GL version 2.1.0 - Build 8.15.10.1968, Intel
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null