Помогите насчет minecraft

У меня проблема после программы которую я закачал смена ника у меня стала крашить игра переустановка не помогает апдейтер тоже не грузит вот причина краша помогите если можете файлы тоже заменить пытался и ник сменить на старый у другую версию качал

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

Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\Сергей\AppData\Roaming\.minecraft\crash-reports\crash-2012-08-28_01.20.13-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

--- BEGIN ERROR REPORT 8e300841 --------
Generated 28.08.12 1:20

- Minecraft Version: 1.3.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.6.0_31, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
- Memory: 433311816 bytes (413 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: GeForce GTS 250/PCIe/SSE2/3DNOW! GL version 3.3.0, NVIDIA Corporation
- Is Modded: Very likely
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- World MpServer Entities: 1 total; [atg[''/355, l='MpServer', x=8,50, y=66,62, z=8,50]]
- World MpServer Players: 1 total; [atg[''/355, l='MpServer', x=8,50, y=66,62, z=8,50]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 0
- Forced Entities: 0 total; []
- Retry Entities: 0 total; []

java.lang.NoClassDefFoundError: aux
at avf.a(SourceFile:303)
at avb.a(SourceFile:1437)
at up.a(SourceFile:757)
at atd.a(SourceFile:128)
at up.d(SourceFile:749)
at atd.d(SourceFile:110)
at net.minecraft.client.Minecraft.a(SourceFile:1388)
at net.minecraft.client.Minecraft.a(SourceFile:1336)
at asv.a(SourceFile:133)
at cs.a(SourceFile:71)
at ba.b(SourceFile:51)
at net.minecraft.client.Minecraft.l(SourceFile:1269)
at net.minecraft.client.Minecraft.J(SourceFile:583)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: aux
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 15 more
--- END ERROR REPORT ddcc71ca ----------

Удали ненужный мод. Должно заработать.