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Get the minecraft has crashed error when trying to load my world. I created a new world and was able to play for about 15 minutes, it crashed out and now i get the Minecraft has crashed error on my new world. I have the latest version of Java. Worked fine yesterday, no luck today. Thanks for your help!



Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Documents and Settings\brian halgrimson\Application Data\.minecraft\crash-reports\crash-2012-09-30_15.13.41-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT 5a431ac --------
Generated 9/30/12 3:13 PM

- Minecraft Version: 1.3.2
- Operating System: Windows XP (x86) version 5.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
- Memory: 479260280 bytes (457 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: GeForce 7900 GTX/PCI/SSE2/3DNOW! GL version 2.1.2, NVIDIA Corporation
- Is Modded: Probably not
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)

java.lang.RuntimeException: Failed to check session lock, aborting
at aeb.h(SourceFile:49)
at aeb.<init>(SourceFile:35)
at adx.<init>(SourceFile:16)
at ady.a(SourceFile:78)
at net.minecraft.client.Minecraft.a(SourceFile:1288)
at apq.e(SourceFile:142)
at apq.a(SourceFile:116)
at apn.a(SourceFile:64)
at apn.d(SourceFile:112)
at apn.m(SourceFile:100)
at net.minecraft.client.Minecraft.l(SourceFile:1077)
at net.minecraft.client.Minecraft.J(SourceFile:583)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 26a5ad28 ----------

Try reinstalling Minecraft. See if that helps.