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My minecraft was running fine until yesterday when it started crashing and now no matter what I do it wont stop... The mods that I HAD installed were:
1) REIS minimap
2) TOOMANYITEMS
3) Warfield 3
4) Metallurgy 2
5) MinionCraft

I clered out all of my mods and then I redownloaded the minecraft client and ran it and it worked fine but if i instal even one of my mods then it starts crashing again... This is the crash-report from after I redownloaded and did all that but after I reinstalled REIS minimap... Can someone please help me?

---- Minecraft Crash Report ----
// Don't do that.
Time: 1/4/13 9:58 PM
Description: Unexpected error
java.lang.ClassFormatError: Truncated class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
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)
at net.minecraft.client.Minecraft.j(SourceFile:924)
at net.minecraft.client.Minecraft.l(SourceFile:1192)
at net.minecraft.client.Minecraft.J(SourceFile:582)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
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)
at net.minecraft.client.Minecraft.j(SourceFile:924)
-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [ays['TOXICBEAST88'/243, l='MpServer', x=174.30, y=58.62, z=153.57]]
Chunk stats: MultiplayerChunkCache: 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (88,64,252), Chunk: (at 8,4,12 in 5,15; contains blocks 80,0,240 to 95,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 805350 game time, 1489284 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: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 71 total; [qn['Skeleton'/411, l='MpServer', x=249.56, y=34.00, z=232.50], qn['Skeleton'/953, l='MpServer', x=133.50, y=33.00, z=149.50], qc['Creeper'/672, l='MpServer', x=168.50, y=17.00, z=212.50], pe['Sheep'/152, l='MpServer', x=109.66, y=72.00, z=220.82], qc['Creeper'/703, l='MpServer', x=113.50, y=30.00, z=146.50], qp['Spider'/399, l='MpServer', x=117.28, y=41.00, z=186.97], oy['Chicken'/149, l='MpServer', x=98.53, y=46.00, z=119.53], ow['Bat'/150, l='MpServer', x=98.16, y=25.05, z=144.34], ow['Bat'/151, l='MpServer', x=106.97, y=18.17, z=173.63], qc['Creeper'/791, l='MpServer', x=117.50, y=51.00, z=174.50], pe['Sheep'/169, l='MpServer', x=157.34, y=71.00, z=213.50], oy['Chicken'/175, l='MpServer', x=167.97, y=69.00, z=210.16], ow['Bat'/163, l='MpServer', x=128.38, y=37.64, z=169.28], qc['Creeper'/918, l='MpServer', x=171.50, y=20.00, z=176.50], oy['Chicken'/162, l='MpServer', x=115.41, y=31.00, z=167.75], px['item.item.egg'/161, l='MpServer', x=115.03, y=31.13, z=169.84], qc['Creeper'/916, l='MpServer', x=106.50, y=54.00, z=155.50], ow['Bat'/160, l='MpServer', x=124.26, y=16.89, z=74.67], ow['Bat'/164, l='MpServer', x=124.59, y=55.10, z=186.25], qr['Zombie'/792, l='MpServer', x=116.50, y=51.00, z=171.50], pd['Pig'/185, l='MpServer', x=182.66, y=67.00, z=223.78], qc['Creeper'/905, l='MpServer', x=190.11, y=33.00, z=181.39], pd['Pig'/176, l='MpServer', x=172.91, y=65.00, z=231.66], pe['Sheep'/177, l='MpServer', x=168.78, y=66.00, z=229.81], qn['Skeleton'/778, l='MpServer', x=95.89, y=21.00, z=117.11], qr['Zombie'/539, l='MpServer', x=114.50, y=43.00, z=210.50], qn['Skeleton'/777, l='MpServer', x=95.30, y=21.00, z=116.30], qc['Creeper'/1032, l='MpServer', x=253.54, y=25.13, z=180.50], qc['Creeper'/1033, l='MpServer', x=246.50, y=25.00, z=179.50], qn['Skeleton'/1034, l='MpServer', x=252.50, y=25.00, z=177.50], pd['Pig'/207, l='MpServer', x=251.38, y=65.00, z=148.26], pd['Pig'/206, l='MpServer', x=249.91, y=64.00, z=129.32], ow['Bat'/201, l='MpServer', x=219.53, y=24.35, z=192.63], ow['Bat'/200, l='MpServer', x=211.56, y=24.89, z=197.22], ow['Bat'/202, l='MpServer', x=215.56, y=21.29, z=193.47], qc['Creeper'/470, l='MpServer', x=166.50, y=21.00, z=231.50], qc['Creeper'/471, l='MpServer', x=131.50, y=32.00, z=190.50], qc['Creeper'/1026, l='MpServer', x=240.50, y=44.00, z=222.50], qc['Creeper'/1027, l='MpServer', x=242.50, y=44.00, z=220.50], pd['Pig'/193, l='MpServer', x=207.97, y=68.00, z=85.53], qc['Creeper'/1029, l='MpServer', x=235.50, y=44.00, z=224.50], oy['Chicken'/192, l='MpServer', x=198.28, y=71.00, z=82.44], qc['Creeper'/1030, l='MpServer', x=134.50, y=25.00, z=193.50], qc['Creeper'/1031, l='MpServer', x=251.50, y=25.00, z=172.50], qn['Skeleton'/344, l='MpServer', x=106.50, y=27.00, z=134.50], qn['Skeleton'/460, l='MpServer', x=139.50, y=37.00, z=171.50], qn['Skeleton'/766, l='MpServer', x=111.50, y=26.00, z=127.50], qn['Skeleton'/629, l='MpServer', x=96.50, y=43.00, z=196.50], qr['Zombie'/995, l='MpServer', x=120.50, y=38.00, z=199.50], qr['Zombie'/633, l='MpServer', x=116.50, y=51.00, z=177.50], ow['Bat'/208, l='MpServer', x=247.25, y=25.10, z=191.41], pd['Pig'/209, l='MpServer', x=253.50, y=69.00, z=200.50], qr['Zombie'/637, l='MpServer', x=124.50, y=36.00, z=171.50], qr['Zombie'/636, l='MpServer', x=126.50, y=36.00, z=171.50], qn['Skeleton'/715, l='MpServer', x=154.50, y=52.00, z=186.50], qn['Skeleton'/717, l='MpServer', x=152.50, y=52.00, z=187.50], qp['Spider'/504, l='MpServer', x=137.50, y=27.00, z=209.50], qn['Skeleton'/716, l='MpServer', x=153.50, y=52.00, z=187.50], qc['Creeper'/852, l='MpServer', x=117.50, y=17.00, z=79.50], qn['Skeleton'/705, l='MpServer', x=149.50, y=38.00, z=143.50], qp['Spider'/835, l='MpServer', x=124.97, y=27.00, z=81.50], qp['Spider'/595, l='MpServer', x=119.50, y=14.00, z=230.16], qr['Zombie'/730, l='MpServer', x=222.50, y=15.00, z=188.50], qr['Zombie'/731, l='MpServer', x=223.82, y=15.00, z=186.50], qc['Creeper'/489, l='MpServer', x=178.50, y=20.00, z=172.50], qc['Creeper'/838, l='MpServer', x=135.50, y=28.00, z=83.50], qr['Zombie'/734, l='MpServer', x=225.70, y=15.00, z=186.50], qp['Spider'/836, l='MpServer', x=132.63, y=28.00, z=83.91], qr['Zombie'/490, l='MpServer', x=125.50, y=57.00, z=185.50], qc['Creeper'/600, l='MpServer', x=129.50, y=38.00, z=78.50], ays['TOXICBEAST88'/243, l='MpServer', x=174.30, y=58.62, z=153.57]]
Retry entities: 0 total; []
Stacktrace:
at ayp.a(SourceFile:281)
at net.minecraft.client.Minecraft.b(SourceFile:1871)
at net.minecraft.client.Minecraft.run(SourceFile:548)
at java.lang.Thread.run(Unknown Source)
-- System Details --
Details:
Minecraft Version: 1.4.6
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_10, Oracle Corporation
Java VM Version: Java HotSpot™ Client VM (mixed mode), Oracle Corporation
Memory: 368712400 bytes (351 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 1332 (74592 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
Suspicious classes: IWrUpdater, Config, VersionCheckThread, ...]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
LWJGL: 2.4.2
OpenGL: Intel® HD Graphics Family GL version 3.1.0 - Build 8.15.10.2559, Intel
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1466 (82096 bytes; 0 MB) allocated, 16 (896 bytes; 0 MB) used