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Today i wanna start in new server that called: dayZ in minecraft. i wrote the bame : mc-warz.com and it open.
i can move but at i tach a something or do something that no move i get this:

---- Minecraft Crash Report ----
// You're mean.

Time: 14:26 25/01/13
Description: Unexpected error

java.lang.NoClassDefFoundError: aux
at net.minecraft.client.Minecraft.j(Minecraft.java:1233)
at net.minecraft.client.Minecraft.l(Minecraft.java:1652)
at net.minecraft.client.Minecraft.J(Minecraft.java:846)
at net.minecraft.client.Minecraft.run(Minecraft.java:771)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: aux
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 5 more
Caused by: java.lang.NullPointerException
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:174)
... 7 more


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

-- Head --
Stacktrace:
at net.minecraft.client.Minecraft.j(Minecraft.java:1233)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [ays['iSurviv'/172, l='MpServer', x=135.45, y=69.54, z=242.28]]
Chunk stats: MultiplayerChunkCache: 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (128,64,248), Chunk: (at 0,4,8 in 8,15; contains blocks 128,0,240 to 143,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 599 game time, 599 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 43 total; [oz['פרה'/4, l='MpServer', x=119.53, y=68.00, z=272.50], oz['פרה'/5, l='MpServer', x=118.47, y=68.00, z=272.50], oz['פרה'/6, l='MpServer', x=116.50, y=72.00, z=274.50], oz['פרה'/7, l='MpServer', x=115.50, y=67.00, z=272.50], oz['פרה'/8, l='MpServer', x=113.50, y=67.00, z=288.47], oz['פרה'/9, l='MpServer', x=113.50, y=66.00, z=290.88], oz['פרה'/10, l='MpServer', x=115.50, y=67.00, z=293.50], oz['פרה'/11, l='MpServer', x=113.50, y=66.00, z=289.53], pe['כבשה'/12, l='MpServer', x=105.50, y=63.00, z=291.50], pe['כבשה'/13, l='MpServer', x=109.50, y=63.00, z=290.50], pe['כבשה'/14, l='MpServer', x=108.50, y=65.00, z=287.50], pe['כבשה'/15, l='MpServer', x=111.50, y=66.00, z=289.50], oz['פרה'/29, l='MpServer', x=154.50, y=74.00, z=291.62], oz['פרה'/31, l='MpServer', x=148.35, y=71.00, z=286.38], oz['פרה'/30, l='MpServer', x=150.50, y=70.00, z=285.50], oz['פרה'/32, l='MpServer', x=150.50, y=70.00, z=285.50], oz['פרה'/42, l='MpServer', x=173.53, y=70.00, z=202.53], oz['פרה'/43, l='MpServer', x=168.50, y=69.00, z=200.50], oz['פרה'/40, l='MpServer', x=172.47, y=70.00, z=201.53], oz['פרה'/41, l='MpServer', x=172.50, y=71.00, z=200.04], oz['פרה'/59, l='MpServer', x=190.65, y=80.00, z=213.20], oz['פרה'/58, l='MpServer', x=192.58, y=86.00, z=218.44], oz['פרה'/57, l='MpServer', x=190.53, y=82.00, z=215.03], oz['פרה'/56, l='MpServer', x=189.41, y=81.00, z=214.53], oz['פרה'/63, l='MpServer', x=188.53, y=81.00, z=259.24], oz['פרה'/62, l='MpServer', x=194.50, y=78.00, z=253.50], oz['פרה'/61, l='MpServer', x=198.50, y=78.00, z=253.50], oz['פרה'/60, l='MpServer', x=196.50, y=79.00, z=249.50], oz['פרה'/64, l='MpServer', x=186.53, y=70.00, z=282.53], oz['פרה'/65, l='MpServer', x=186.53, y=70.00, z=281.47], oz['פרה'/66, l='MpServer', x=185.13, y=70.00, z=281.47], oz['פרה'/67, l='MpServer', x=185.03, y=70.00, z=282.53], ow['Bat'/185, l='MpServer', x=210.28, y=29.06, z=208.55], ow['Bat'/178, l='MpServer', x=187.73, y=59.78, z=298.58], ow['Bat'/179, l='MpServer', x=192.47, y=62.10, z=296.75], ays['iSurviv'/172, l='MpServer', x=135.45, y=69.54, z=242.28], ow['Bat'/275, l='MpServer', x=84.56, y=13.83, z=315.48], ow['Bat'/273, l='MpServer', x=75.47, y=15.48, z=312.49], ow['Bat'/272, l='MpServer', x=62.52, y=12.63, z=317.60], ph['דיונון'/283, l='MpServer', x=83.28, y=58.34, z=258.47], ph['דיונון'/282, l='MpServer', x=77.50, y=56.00, z=252.66], ph['דיונון'/285, l='MpServer', x=78.78, y=57.41, z=247.50], ph['דיונון'/284, l='MpServer', x=78.94, y=58.25, z=255.78]]
Retry entities: 0 total; []
Stacktrace:
at ayp.a(WorldClient.java:440)
at net.minecraft.client.Minecraft.b(Minecraft.java:2401)
at net.minecraft.client.Minecraft.run(Minecraft.java:794)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_09, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 344061688 bytes (328 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 26128 (1463168 bytes; 1 MB) allocated, 2 (112 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.26 FML v4.7.4.520 Minecraft Forge 6.6.0.497 4 mods loaded, 4 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FlansMod [Flan's Mod] (Flans Mod 2.1.1 for Minecraft 1.4.6 Universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
LWJGL: 2.4.2
OpenGL: GeForce 8500 GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'forge,fml'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: 884 (49504 bytes; 0 MB) allocated, 13 (728 bytes; 0 MB) used