I've been having some problems with my Minecraft game, every time I seem to open the interface for the anvil, the game itself crashes. Here's the crash report: (no mods active from what I can tell) ---- Minecraft Crash Report ----// I'm sorry, Dave.Time:12/25/13 10:15 PMDescription: Exception in world tickjava.lang.NoSuchMethodError: aww.<init>(Luc;Labv;III)Vat beu.c(SourceFile:291)at bct.a(SourceFile:755)at dv.a(SourceFile:45)at cm.b(SourceFile:64)at bct.e(SourceFile:98)at bda.b(SourceFile:60)at ats.k(SourceFile:1386)at ats.S(SourceFile:663)at ats.d(SourceFile:619)at net.minecraft.client.main.Main.main(SourceFile:101)A detailed walkthrough of the error, its code path and all known details is as follows:-- Head --Stacktrace:at beu.c(SourceFile:291)at bct.a(SourceFile:755)at dv.a(SourceFile:45)at cm.b(SourceFile:64)at bct.e(SourceFile:98)-- Affected level --Details:Level name: MpServerAll players: 1 total; [bdf['CommanderNomNoms'/152, l='MpServer', x=-348.30, y=119.62, z=356.38]]Chunk stats: MultiplayerChunkCache: 185Level seed: 0Level generator: ID 00 - default, ver 1. Features enabled: falseLevel generator options:Level spawn location: World: (-212,64,248), Chunk: (at 12,4,8 in -14,15; contains blocks -224,0,240 to -209,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)Level time: 13891455 game time, 13892875 day timeLevel dimension: 0Level 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: falseForced entities: 24 total; [rp['Chicken'/0, l='MpServer', x=-414.44, y=96.00, z=371.44], rn['Bat'/2, l='MpServer', x=-356.88, y=61.25, z=307.61], sx['entity.MinecartRideable.name'/3, l='MpServer', x=-360.91, y=118.34, z=366.78], st['entity.MinecartChest.name'/4, l='MpServer', x=-360.41, y=118.34, z=365.59], st['entity.MinecartChest.name'/5, l='MpServer', x=-360.06, y=118.34, z=364.38], sp['Boat'/36, l='MpServer', x=-287.25, y=63.55, z=376.75], rn['Bat'/6, l='MpServer', x=-366.67, y=43.75, z=398.50], ry['Sheep'/37, l='MpServer', x=-287.66, y=73.00, z=372.47], rn['Bat'/7, l='MpServer', x=-347.70, y=43.81, z=344.42], rx['Pig'/163, l='MpServer', x=-424.13, y=80.00, z=318.97], rn['Bat'/8, l='MpServer', x=-336.16, y=15.68, z=406.37], rn['Bat'/10, l='MpServer', x=-332.12, y=25.00, z=392.09], rn['Bat'/11, l='MpServer', x=-321.27, y=31.79, z=406.41], rn['Bat'/12, l='MpServer', x=-321.25, y=46.10, z=412.75], rn['Bat'/13, l='MpServer', x=-331.12, y=32.95, z=413.13], rp['Chicken'/14, l='MpServer', x=-335.62, y=84.00, z=407.56], rn['Bat'/15, l='MpServer', x=-323.25, y=31.10, z=424.25], bdf['CommanderNomNoms'/152, l='MpServer', x=-348.30, y=119.62, z=356.38], rn['Bat'/17, l='MpServer', x=-333.18, y=44.72, z=414.26], rn['Bat'/16, l='MpServer', x=-328.03, y=31.10, z=419.69], rn['Bat'/19, l='MpServer', x=-330.25, y=21.10, z=432.75], rx['Pig'/25, l='MpServer', x=-315.13, y=68.00, z=332.84], rx['Pig'/24, l='MpServer', x=-305.13, y=64.00, z=329.34], rn['Bat'/27, l='MpServer', x=-306.75, y=43.10, z=436.63]]Retry entities: 0 total; []Server brand: vanillaServer type: Integrated singleplayer serverStacktrace:at bda.a(SourceFile:284)at ats.k(SourceFile:1393)at ats.S(SourceFile:663)at ats.d(SourceFile:619)at net.minecraft.client.main.Main.main(SourceFile:101)-- Affected level --Details:Level name: MpServerAll players: 1 total; [bdf['CommanderNomNoms'/152, l='MpServer', x=-348.30, y=119.62, z=356.38]]Chunk stats: MultiplayerChunkCache: 185Level seed: 0Level generator: ID 00 - default, ver 1. Features enabled: falseLevel generator options:Level spawn location: World: (-212,64,248), Chunk: (at 12,4,8 in -14,15; contains blocks -224,0,240 to -209,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)Level time: 13891455 game time, 13892875 day timeLevel dimension: 0Level 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: falseForced entities: 24 total; [rp['Chicken'/0, l='MpServer', x=-414.44, y=96.00, z=371.44], rn['Bat'/2, l='MpServer', x=-356.88, y=61.25, z=307.61], sx['entity.MinecartRideable.name'/3, l='MpServer', x=-360.91, y=118.34, z=366.78], st['entity.MinecartChest.name'/4, l='MpServer', x=-360.41, y=118.34, z=365.59], st['entity.MinecartChest.name'/5, l='MpServer', x=-360.06, y=118.34, z=364.38], sp['Boat'/36, l='MpServer', x=-287.25, y=63.55, z=376.75], rn['Bat'/6, l='MpServer', x=-366.67, y=43.75, z=398.50], ry['Sheep'/37, l='MpServer', x=-287.66, y=73.00, z=372.47], rn['Bat'/7, l='MpServer', x=-347.70, y=43.81, z=344.42], rx['Pig'/163, l='MpServer', x=-424.13, y=80.00, z=318.97], rn['Bat'/8, l='MpServer', x=-336.16, y=15.68, z=406.37], rn['Bat'/10, l='MpServer', x=-332.12, y=25.00, z=392.09], rn['Bat'/11, l='MpServer', x=-321.27, y=31.79, z=406.41], rn['Bat'/12, l='MpServer', x=-321.25, y=46.10, z=412.75], rn['Bat'/13, l='MpServer', x=-331.12, y=32.95, z=413.13], rp['Chicken'/14, l='MpServer', x=-335.62, y=84.00, z=407.56], rn['Bat'/15, l='MpServer', x=-323.25, y=31.10, z=424.25], bdf['CommanderNomNoms'/152, l='MpServer', x=-348.30, y=119.62, z=356.38], rn['Bat'/17, l='MpServer', x=-333.18, y=44.72, z=414.26], rn['Bat'/16, l='MpServer', x=-328.03, y=31.10, z=419.69], rn['Bat'/19, l='MpServer', x=-330.25, y=21.10, z=432.75], rx['Pig'/25, l='MpServer', x=-315.13, y=68.00, z=332.84], rx['Pig'/24, l='MpServer', x=-305.13, y=64.00, z=329.34], rn['Bat'/27, l='MpServer', x=-306.75, y=43.10, z=436.63]]Retry entities: 0 total; []Server brand: vanillaServer type: Integrated singleplayer server-- System Details --Details:Minecraft Version: 1.6.2Operating System: Windows 7 (amd64) version 6.1Java Version: 1.6.0_24, Sun Microsystems Inc.Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Sun Microsystems Inc.Memory: 112996880 bytes (107 MB) / 237830144 bytes (226 MB) up to 954466304 bytes (910 MB)JVM Flags: 1 total; -Xmx1GAABB Pool Size: 7955 (445480 bytes; 0 MB) allocated, 234 (13104 bytes; 0 MB) usedSuspicious classes: [com.prupe.mcpatcher.MCPatcherUtils, Config, JsonUtils, ...], [com.prupe.mcpatcher.cc.ColorizeItem, Colorizer, ColorMap, ...], [com.prupe.mcpatcher.cit.CITUtils, OverrideBase, ItemOverride, ...], [com.prupe.mcpatcher.ctm.CTMUtils, TileOverrideIterator, ITileOverride, ...], [com.prupe.mcpatcher.hd.AAHelper, FontUtils, MipmapHelper, ...], [com.prupe.mcpatcher.mob.MobRandomizer, MobRuleList, MobOverlay, ...], [com.prupe.mcpatcher.sky.SkyRenderer, WorldEntry, Layer, ...]IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63Launched Version: 1.6.2-commandernomnomsLWJGL: 2.9.0OpenGL: Intel® HD Graphics GL version 2.1.0 - Build 8.15.10.2509, IntelIs Modded: Very likely; Jar signature invalidatedType: Client (map_client.txt)Resource Pack: DefaultCurrent Language: English (US)Profiler Position: N/A (disabled)Vec3 Pool Size: 196 (10976 bytes; 0 MB) allocated, 45 (2520 bytes; 0 MB) used If you can help me find the reason for the crashing, it'd be very much appreciated,thanks ahead of time.