Minecraft Forums

Hey all--new to the forum, so I hope this is the appropriate place to ask for you in interpreting a crash report. (If not, please let me know). Here's the body of the report--thanks so much.
tpearson


---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 1/13/13 11:41 AM
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_15, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 473433664 bytes (451 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

Ah, thanks for the Java tip. Yes, still getting the crash on all worlds--actually, it's mostly creative worlds and survival has been OK until today when it too joined the crash parade.

I'll try the Java update--thanks again all . . .

OK, uninstalled and then re-installed Java and still get a immediate crash--does this look any different?


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

Time: 1/13/13 6:21 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: 1.7.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 477309648 bytes (455 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