Crash Minecraft 1.7.5 ouverture monde :(

Bonjour,

voila, quand je souhaite démarré une partie dans minecraft, je charge une map déjà crée et la, le crash :

---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 10/05/14 16:19
Description: Unexpected error

java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
bmj.a(Lano;)V @22: invokevirtual
Reason:
Type 'beq' (current frame, stack[1]) is not assignable to 'bco'
Current Frame:
bci: @22
flags: { }
locals: { 'bmj', 'ano' }
stack: { 'azl', 'beq' }
Bytecode:
0000000: 2bc1 0018 9900 182a b400 84bb 002c 592b
0000010: c000 18b7 00b1 b600 a1a7 001f 2bc1 0017
0000020: 9900 182a b400 84bb 0024 592b c000 17b6
0000030: 009e b700 a9b6 00a1 b1
Stackmap Table:
same_frame(@28)
chop_frame(@56,2)

at bkf.a(SourceFile:290)
at azl.a(SourceFile:1673)
at azl.a(SourceFile:1627)
at bkc.a(SourceFile:118)
at ha.a(SourceFile:70)
at ha.a(SourceFile:13)
at eg.a(SourceFile:166)
at azl.p(SourceFile:1560)
at azl.ah(SourceFile:757)
at azl.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:148)


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

-- Head --
Stacktrace:
at bkf.a(SourceFile:290)
at azl.a(SourceFile:1673)
at azl.a(SourceFile:1627)
at bkc.a(SourceFile:118)
at ha.a(SourceFile:70)
at ha.a(SourceFile:13)
at eg.a(SourceFile:166)

-- Affected level --
Details:
Level name: MpServer
All players: 0 total; []
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 03 - amplified, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 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: 0 total; []
Retry entities: 0 total; []
Server brand: ~~ERROR~~ NullPointerException: null
Server type: Integrated singleplayer server
Stacktrace:
at bkg.a(SourceFile:289)
at azl.b(SourceFile:1947)
at azl.f(SourceFile:725)
at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
Minecraft Version: 1.7.5
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 396401376 bytes (378 MB) / 566755328 bytes (540 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Launched Version: 1.7.5-mcpatcher
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 7900 Series GL version 4.3.12682 Compatibility Profile Context 14.100.0.0, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: []
Current Language: Français (France)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: On (16)


Sa fonctionné très bien hier, j'ai juste dl une nouvelle version de java, sa pourrai être sa ?

Merci d'avance pour votre aide :)