game crashes when i enter i enter the server meloncraft.eu

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 12/11/2013 9:24 μμ
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at blq.a(SourceFile:236)
at bll.b(SourceFile:592)
at bll.a(SourceFile:1081)
at bll.b(SourceFile:813)
at azd.ad(SourceFile:780)
at azd.e(SourceFile:704)
at net.minecraft.client.main.Main.main(SourceFile:103)

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

– Head –
Stacktrace:
at blq.a(SourceFile:236)
at bll.b(SourceFile:592)
at bll.a(SourceFile:1081)

– Affected level –
Details:
Level name: MpServer
All players: 4 total; [bje['JohnOfDrama'/112972, l='MpServer', x=1511,00, y=201,62, z=-439,00], bld['mixmax77'/112947, l='MpServer', x=1518,98, y=215,69, z=-436,60], bld['xaxas10'/50406, l='MpServer', x=1518,00, y=215,69, z=-435,25], bld['PartyGameKing'/108732, l='MpServer', x=1506,66, y=210,96, z=-449,73]]
Chunk stats: MultiplayerChunkCache: 80, 80
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (1511,200,-439), Chunk: (at 7,12,9 in 94,-28; contains blocks 1504,0,-448 to 1519,255,-433), Region: (2,-1; contains chunks 64,-32 to 95,-1, blocks 1024,0,-512 to 1535,255,-1)
Level time: 24581079 game time, 216000 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: adventure (ID 2). Hardcore: false. Cheats: false
Forced entities: 7 total; [bje['JohnOfDrama'/112972, l='MpServer', x=1511,00, y=201,62, z=-439,00], bld['mixmax77'/112947, l='MpServer', x=1518,98, y=215,69, z=-436,60], bld['xaxas10'/50406, l='MpServer', x=1518,00, y=215,69, z=-435,25], bld['PartyGameKing'/108732, l='MpServer', x=1506,66, y=210,96, z=-449,73], bld['mixmax77'/112947, l='MpServer', x=1518,98, y=215,69, z=-436,60], bld['PartyGameKing'/108732, l='MpServer', x=1506,66, y=210,96, z=-449,73], bld['xaxas10'/50406, l='MpServer', x=1518,00, y=215,69, z=-435,25]]
Retry entities: 0 total; []
Server brand: craftbukkit
Server type: Non-integrated multiplayer server
Stacktrace:
at biz.a(SourceFile:284)
at azd.b(SourceFile:1951)
at azd.e(SourceFile:718)
at net.minecraft.client.main.Main.main(SourceFile:103)

– System Details –
Details:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 28082920 bytes (26 MB) / 93405184 bytes (89 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 9260 (518560 bytes; 0 MB) allocated, 9260 (518560 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.2
LWJGL: 2.9.0
OpenGL: ATI Radeon HD 4300/4500 Series GL version 3.3.10750 Compatibility Profile Context, ATI Technologies Inc.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: [Faithful Texture Pack 64x64 1.6.zip, [1.6.2]_R3D.CRAFT_Default_Realism_256x_v0.1.1.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 31 (1736 bytes; 0 MB) allocated, 31 (1736 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

i sent that because i am unable to find the exact place of the file!