Minecraft Forums

My game crashing when i try to load a world, think it's my java but here's what minecraft says.

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 10/7/12 2:41 PM
Description: Unexpected error

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)

Relevant Details:
- Minecraft Version: 1.3.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
- Memory: 475102744 bytes (453 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: GeForce GT 520/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Probably not
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)

Can someone please help me?