Mon minecraft crash lorsque je rejoin un serveur

Bonjour, mon minecraft crash lorsque je rejoin un serveur mais un truc m'echappe je dis dans edite profile qu'il doit regarder les ficher : C:\Users\Pierre\AppData\Roaming\.minecraft

et quand je join sa marche pas par contre lorsque je decoche aucun probleme sauf que plus aucun pack ne peut marcher ni de version help me !

message du crash : --- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 25/10/15 16:20
Description: Ticking screen

java.lang.IndexOutOfBoundsException: 18496
at java.nio.DirectIntBufferU.get(Unknown Source)
at bmt.a(SourceFile:271)
at bmt.a(SourceFile:220)
at azi.a(SourceFile:1674)
at azi.a(SourceFile:1632)
at bjw.a(SourceFile:118)
at gu.a(SourceFile:70)
at gu.a(SourceFile:13)
at ef.a(SourceFile:164)
at bbm.c(SourceFile:85)
at azi.p(SourceFile:1323)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)


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

-- Head --
Stacktrace:
at java.nio.DirectIntBufferU.get(Unknown Source)
at bmt.a(SourceFile:271)
at bmt.a(SourceFile:220)
at azi.a(SourceFile:1674)
at azi.a(SourceFile:1632)
at bjw.a(SourceFile:118)
at gu.a(SourceFile:70)
at gu.a(SourceFile:13)
at ef.a(SourceFile:164)
at bbm.c(SourceFile:85)

-- Affected screen --
Details:
Screen name: bbm

-- Affected level --
Details:
Level name: MpServer
All players: 0 total; []
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 01 - flat, 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 0 total; []
Retry entities: 0 total; []
Server brand: ~~ERROR~~ NullPointerException: null
Server type: Non-integrated multiplayer server
Stacktrace:
at bka.a(SourceFile:289)
at azi.b(SourceFile:1952)
at azi.f(SourceFile:720)
at net.minecraft.client.main.Main.main(SourceFile:152)

-- System Details --
Details:
Minecraft Version: 1.7.4
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 123838808 bytes (118 MB) / 286941184 bytes (273 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 18497 (1035832 bytes; 0 MB) allocated, 18497 (1035832 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.4
LWJGL: 2.9.1
OpenGL: GeForce GTX 650/PCIe/SSE2 GL version 4.5.0 NVIDIA 353.30, NVIDIA Corporation
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: Probably not. Jar signature remains and client brand is untouched.
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: Off (1)