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

Time: 14. 6. 20 오후 7:16
Description: Unexpected error

java.lang.IllegalArgumentException: Cannot set property ayi

as it does not exist!
at axy.a(SourceFile:128)
at atx.a(SourceFile:35)
at afg.a(SourceFile:61)
at aht.a(SourceFile:113)
at bxx.a(SourceFile:313)
at blh.ar(SourceFile:1320)
at blh.q(SourceFile:1677)
at blh.ap(SourceFile:860)
at blh.a(SourceFile:303)
at net.minecraft.client.main.Main.main(SourceFile:121)

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

– Head –
Stacktrace:
at axy.a(SourceFile:128)
at atx.a(SourceFile:35)
at afg.a(SourceFile:61)
at aht.a(SourceFile:113)
at bxx.a(SourceFile:313)
at blh.ar(SourceFile:1320)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [cbw['yeshjho_'/0, l='MpServer', x=15.58, y=91.02, z=10.35]]
Chunk stats: MultiplayerChunkCache: 250, 250
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: 933.00,4.00,407.00 - World: (933,4,407), Chunk: (at 5,0,7 in 58,25; contains blocks 928,0,400 to 943,255,415), Region: (1,0; contains chunks 32,0 to 63,31, blocks 512,0,0 to 1023,255,511)
Level time: 287110 game time, 1000 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: 6 total; [aaf['entity.MinecartRideable.name'/1, l='MpServer', x=1.50, y=98.00, z=4.50], aaf['entity.MinecartRideable.name'/2, l='MpServer', x=-0.50, y=98.00, z=-3.50], aaf['entity.MinecartRideable.name'/3, l='MpServer', x=-0.50, y=98.00, z=4.50], ado['§ka§kb§kc§r§9S§9T§9A§9R§9T§r§ka§kb§kc§r'/4, l='MpServer', x=-1.81, y=101.00, z=0.50], aaf['entity.MinecartRideable.name'/5, l='MpServer', x=1.50, y=98.00, z=-3.50], cbw['yeshjho_'/0, l='MpServer', x=15.58, y=91.02, z=10.35]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bxy.a(SourceFile:310)
at blh.b(SourceFile:2133)
at blh.a(SourceFile:317)
at net.minecraft.client.main.Main.main(SourceFile:121)

– System Details –
Details:
Minecraft Version: 14w25a
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 296673600 bytes (282 MB) / 653262848 bytes (623 MB) up to 2863661056 bytes (2731 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx3G
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 14w25a
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 9.17.10.2875, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
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: [OCD pack 1.7.2.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)