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I just decided to update to 1.5.2. I force updated it and after the files downloaded and the mojang screen appeared, it crashed with a report like this

---- Minecraft Crash Report ----
// I just don't know what went wrong

Time: 6/8/13 6:48 PM
Description: Unexpected error

java.lang.UnsatisfiedLinkError: C:\Program Files\Java\jre7\bin\management.dll: %1 is not a valid Win32 application
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(Unknown Source)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at sun.security.action.LoadLibraryAction.run(Unknown Source)
at sun.security.action.LoadLibraryAction.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.management.ManagementFactoryHelper.<clinit>(Unknown Source)
at java.lang.management.ManagementFactory.getRuntimeMXBean(Unknown Source)
at ma.h(SourceFile:74)
at ma.g(SourceFile:61)
at ma.a(SourceFile:42)
at net.minecraft.client.Minecraft.K(SourceFile:656)
at net.minecraft.client.Minecraft.run(SourceFile:526)
at java.lang.Thread.run(Unknown Source)


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

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 417347752 bytes (398 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
JVM Flags: ~~ERROR~~ NoClassDefFoundError: Could not initialize class sun.management.ManagementFactoryHelper
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: AMD Radeon HD 7700 Series GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.
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





After i got this report i decided to completely delete the .minecraft folder and start over, but i still get the same screen. Literally i wiped the whole coputer free of minecraft. I am running on a really powerful computer and everything.

Help!

Thanks cestislife

It worked like a charm!! cool AVITAR BTW

I get A Similar Problem Her It Is.

I got a windows 8 and Windows 7 laptop both are connected to each other via a crossover cable.
I Was Playing Minecraft With My Stepmom We Were Using The Old 1.5.2 Launcher Due To The Fact That We Both Cannot Use Thr New Launcher Because There Both Logged Into My Account(my stepmom doesn't have a premium account yet)
Anyways We Were Playing Minecraft (she was hosting) When My Minecraft Froze. I Tried Everything I Could To Fix The Problem but i got the same problem. please help.